Answer:
The speed of the ant is 6 [tex]\frac{cm}{min}[/tex]
Explanation:
Speed is a magnitude that expresses the relationship between the space traveled by an object, the time used for it and its direction. In other words, velocity relates change in position (or displacement) with time by:
[tex]speed=\frac{distance}{time}[/tex]
In this case:
speed= ?distance= 1 mmtime= 1 secondReplacing:
[tex]speed=\frac{1 mm}{1 second}[/tex]
Being 1 mm equivalent to 0.1 cm and 1 seconds equal to 0.01667 minutes then:
[tex]speed=\frac{1 mm}{1 second}=\frac{0.1 cm}{0.01667 min}[/tex]
speed = 6 [tex]\frac{cm}{min}[/tex]
The speed of the ant is 6 [tex]\frac{cm}{min}[/tex]
Can an element be a compound? Explain?
Answer:
Yes
Explanation:
A compound is a pure substance composed of two or more different atoms chemically bonded to one another. A compound can be destroyed by chemical means. It might be broken down into simpler compounds, into its elements or a combination of the two.
How many Magnesium are in 10MgCI2
Answer:
10 Mg
Explanation:
We are given the compounds MgCl₂.
For every one mole of Magnesium Chloride, there are 1 atom of Mg and 2 atoms of Cl₂.
So if we have 10 moles of MgCl₂, we will have 10 Mg.
6
Adding thermal energy to a cup of water can cause particles to do which of the following? *
(2 Points)
Select all that apply.
Move faster
Get farther apart
Move slower
Remain constant
Get closer together
Adding thermal energy to a cup of water can cause particles of water to move faster.
Substances are made up of particles which are in constant random motion colliding frequently with each other as well as with the walls of the container. This is a postulate of the kinetic theory of matter.
The temperature of a substance is defined as the average kinetic energy of the particles of that substance. As temperature increases, the kinetic energy of the particles increases because the average velocity of the particles of the substance increases.
Therefore, adding thermal energy to a cup of water can cause particles of water to move faster.
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Is the air that we breathe an element, compound, mixture, or pure substance?
Element
Pure substance
O Mixture
Compound
Measuring Physical Properties Lab Report Instructions: In the Physical Properties lab, you will test the physical properties of different building materials in order to pick the appropriate materials for a new home in Tiny World. Record your observations and test measurements in the lab report below. You will submit your completed report. Name and Title: , instructor's name, Sep 9th, measuring physical properties lab report. Hypothesis: In this section, include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment. If we use Aluminum to build the roof of the house, then the temperature inside the house will remain cooler. If we use Clay brick to build the walls and floors of the house, then the temperature inside the house will remain cooler. If we use copper to bring electricity into the home, then it will allow electricity to flow into the home at a faster rate. If we use Iron to construct the latches on the windows and doors, then the magnetism will keep the latches secure. Procedure: The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using the summary questions, clearly define the dependent and independent variables of the experiment. Independent V- The type of material tested. dependent V- The results of each test completed Objective(s): In your own words, what was the purpose of this lab? Conclusion: Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words. 1. Using two to three sentences, summarize what you investigated and observed in this lab. 2. What building material did you use to build your house? Did your results support or fail to support your hypotheses? 3. What were the densities of the materials you chose for the walls and floor for the home in Tiny World? Why do you think a building material's density is important when building homes or architectural structures? 4. Why wouldn’t you choose wood or aluminum for the latches on your house? 5. Which material has the highest thermal conductivity? Which material has the highest electrical conductivity? Explain why thermal and electrical conductivity is so high with this material. 6. Think about where you live now or where you have lived in the past; use complete sentences to describe this environment and the weather. What building materials do you believe would work well to build a home in that area? Explain why you chose these materials. P.S. Answer objections and conclusion.
Answer:
Explanation:
Data:
Record the results of each of your physical property tests in the table below.
Wood Clay Brick Iron Aluminum Copper Nickel
Flexibility
(?/10) 3/10 2/10 4/10 7/10 6/10 5/10
Magnetism
(number of paper clips) 0 1 10 0 0 7
Thermal Conductivity
(W/(m·K)) 0.12 0.6 80 235 400 91
Electrical Conductivity
(x107 S/m) 0 S/m 0 S/m (1 x107 S/m) (3.8 x107 S/m) (5.9 x107 S/m) ( 1.4x107 S/m)
Density
(g/cm3) 0.75 0.51 0.33 0.45 0.315 0.318
The elements composing a are combined in a definite proportion by mass .
Answer:
Law of Definite Proportions states that in a given type of chemical substance, the elements are always combined in the same proportions by mass. ... Oxygen makes up 88.8% of the mass of any sample of pure water, while hydrogen makes up the remaining 11.2% of the mass
Answer:
Law of Definite Proportions states that in a given type of chemical substance, the elements are always combined in the same proportions by mass. Oxygen makes up 88.8% of the mass of any sample of pure water, while hydrogen makes up the remaining 11.2% of the mass.
Can someone help me please!! Apex
What does the mass number represent?
A. The average charge of all ions of the element
B. The sum of the masses of all the isotopes
C. The sum of the atomic numbers of all the isotopes
D. The average mass of all isotopes of the element
Answer:
It is D
Explanation:
last brainliest
the density of mercury is 13.6 g/cm3 what is the mass of 8.20 ml of mercury
Answer:
The answer is
111.52 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
density of mercury = 13.6 g/cm³
First we must convert the volume from mL to cm³
if 1 mL = 1 cm³
Then 8.20 mL = 8.20 cm³
volume = 8.20 cm³
The mass of mercury is
mass = 13.6 × 8.2
We have the final answer as
111.52 gHope this helps you
how many kilograms are in a 50 pound luggage bag?
What is the density of a block of wood that has a mass of 125grams and volume of 25.6mL?
what would cause water to turn from a gas to a liquid
Answer:
When you heat something up, it makes the molecules move faster. ... When this happens, all of the molecules go flying apart and become a gas (like when you boil water to make steam). The process of gas molecules leaving the liquid to go into the gas is called "evaporation." The opposite process is called "condensation.
XxAnimexXMatch the scientist with their scientific idea. Question 2 options: Gases are formed from tiny particles so small you can’t see them. The particles are spread out into a certain area and move when people walk through them. Matter was made of different kinds of things. Substances combine or break apart to create new, different substances. 1. Democritus 2. Bernoulli 3. Priestley
Answer:
gases is 2
particles are 3
and the 3rd question is 1
Explanation:
Bernoulli's principle states that gas is a tiny particle that is not visible to the eyes, but particles move when displaced by some factors. Thus, the correct matches are a. 2, b. 3, and c. 1.
What is Bernoulli's principle?Bernoulli's principle states the kinetic molecular theory of gases. According to the theory, gas particles are small and are far away from each other. But they move from their position due to the fluid dynamics when objects pass through them. Hence, option a. 2 is correct.
Democritus stated about the matter is made of various constituents particles. He is known as the "Father of science" as gave the idea of matter comprising atoms. Hence, option c. 1 is correct.
Joseph Priestley proposed about the new substance formed by breaking or creating the bonds between the reactants. According to him, gases are made of particles that can be a mixture. Hence, option b. 3 is correct.
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Which of the following would be one of the interacting parts in a weather system?
CLOUDS would be one of the interacting parts in a weather system.
Determine whether each statement is a description of a physical property or a chemical property. Please check the box that applies.
Copper conducts heat well.
physical
chemical
Alcohol has a sweet odor.
physical
chemica
Answer:
A.physical
A.physical
Explanation:
The measurable properties are said to be the physical property of the substance. The conductivity of heat and the sweet odor are physical properties. Thus, options 1. a and 2. a is correct.
What is physical property?Physical properties are the characteristics of the substance that can be measured and observed directly. There is only change in the phases of matter involved.
The alterations in the chemical compositions and reactivity are not characteristic of the physical properties. It does not occur or requires a chemical reaction.
The copper conducting heat and the sweet smell of alcohol are physical properties as conductivity and odor are the physical traits along with malleability, hardness, solubility, etc.
Therefore, the conductivity of copper and sweet smell are physical properties.
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what did chemists learn about the moon's surface by analyzing moon rocks
Answer:
i gotchu babes!Explanation:
They learned that oceans of lava once covered the moon's surface. ... Astronauts collected rock samples from Earth's moon.What is the movement of one plate below another
called?
Answer:
Subduction is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced to sink due to high gravitational potential energy into the mantle. Regions where this process occurs are known as subduction zones.
Explanation:
Hope this helps :D
Answer:
subduction
Explanation:
hope this helps
A single measurement system that scientists all over the world have agreed on adopted in 1960 by the General Conference on Weights and Measures; has seven base units, and most other units are derived from these seven?
Answer:le système international d’unite(SI)
Explanation:
if the (H+) is 2.1×10^-12 MHCIO4, What is the PH? is the solution ACIDIC, BASIC or NEUTRAL.
Explanation:
The pH of a substance can be found by using the formula
[tex]pH = - log[ H^{ + } ][/tex]
where [ H+ ] is the hydrogen ion concentration in the substance
From the question
[ H+ ] = 2.1 × 10-¹² M
To find the pH substitute the value into the above formula
We have
[tex]pH = - log(2.1 \times {10}^{ - 12} ) \\ = 11.6777807 \: \: \: \: \: \: [/tex]
We have the answer as
pH = 11.7The solution is basic since it lies in the basic region that is from 8 to 14
Hope this helps you
Do it and I will give brainliest
Answer:
Hi there!
Your answer is
Mass: 12
&
Electrons:5
Explanation:
The electrons in a neutral atom is the same as the # of Protons!
Which type of energy refers to the sum of potential and kinetic energies in the particles of a substance?
A.motion
B.stored
C.internal
D.heat
Thermal (heat) energy is ur answer mate
Hope it helps
Answer:
heat is your answer ;) <3
Explanation:
The table shows five items that a person may consider including in a safety contract.
Item number Item
1 Label all containers.
2 Tie long hair back.
3 Bring a cell phone to the lab in case of emergency.
4 Bring a small laptop computer to the lab to use MSDS online.
5 Wear safety goggles at all times.
Which three of the five items would be best to include in a safety contract?
1, 2, and 3
1, 2, and 5
2, 3, and 4
3, 4, and 5
Answer:
1,2, and 5
Explanation:
The items that should include in a safety contract are:
1 Label all containers.2 Tie long hair back.5 Wear safety goggles at all times.Who has to entire a technology safety settlement?One copy must be signed by means of both you and a determined mum or dad before you may participate inside the laboratory. the second reproduction is to be stored in your technology pocketbook as a regular reminder of the safety guidelines. 1. conduct yourself in an accountable man- ner at all times inside the laboratory.
Which is accurate lab protection?Avoid direct contact with any chemical. in no way odor, inhale, or flavor laboratory chemical compounds. always wash palms and fingers with soap and water after eliminating gloves and earlier than leaving the painting's place. never eat, drink, bite gum or tobacco, smoke, or apply cosmetics in the laboratory.
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Identify whether each element is a halogen, a noble gas, or nonmetal only.
Astatine (At):
Nitrogen (N):
Krypton (Kr):
Chlorine (Cl):
Sulfur (S):
Answer:
(At)halogen
(N)nonmetal only
(Kr)Nobel gas
(CI)halogen
(S)nonmetal only
Explanation:
Answer:
(At): Halogen
(N): Nonmetal only
(Kr): Noble Gas
(Cl): Halogen
(S): Nonmetal only
Explanation:
Took the test on edge!
Sorry if its wrong but it shouldnt be.
Please give brainliest <3
Derek didn't use all the HCl that he poured out for an
experiment. He decides to store the rest in an aluminum
can. What do you tell him.
ut of
question
Select one:
a. Nothing. Aluminum is a safe non-reactive metal for
storage of acids.
b. Hydrochloric acid is flammable in the presence of
aluminum.
c. The reaction of the acid and the aluminum can will
turn the can ice cold.
d. The acid is likely to eat through the can.
Answer:
d. The acid is likely to eat through the can.
Explanation:
Aluminium is a metallic element found in group 3 of the periodic table. Aluminum is a very reactive metal owing to the fact that it reacts with almost every substance it comes in contact with e.g air, acids, bases etc.
In this question where Derek stores his Hydrochloric acid (HCl) remnant, after an experiment, into a can made of aluminum. What will happen is that the acid is likely going to eat through the can. This might occur gradually but will eventually. Aluminum protects itself from further reactions by forming a layer of Aluminum oxide (Al2O3) when it reacts with air.
This is what keeps the reaction with HCl gradual but the acid will eventually permeate the layer and corrode the aluminum can by reacting with the aluminum.
2. The three sub-atomic particles that make up the atom are
Answer:
Protons
Neutrons
Electrons
Explanation:
0.000786 written in scientific notation is?
1395 +3.4
What is the answer
Answer:
1398.4
Explanation:
Use a calculator
Honestly didnt even need to
Which describes any substance that shatters or breaks easily?
malleable
brittle
volatile
ductile
Answer:
Brittle
Explanation:
Its the most easy thing to break.
The substance that breaks easily or shatters is brittle. As malleable and ductile are hard in nature and volatiles are types of solute. Thus, option B is correct.
What are brittle substances?These substances are hard and rigid but contain little tensile strength that is they can be broken down into pieces easily on applying a little amount of pressure.
They have little deformation and poor capacity for conduction of current with high compressive strength and low tensile strength.
On applying pressure they fracture with little elastic deformation and some examples of it are some alloys with low plasticity, glass, and graphite. Their breaking is also known as brittle breakage.
Ductile are stiff and unable to break and the volatiles are type of solute easily dissolve in water malleable and are unbreakable or difficult to break. These all are the bad conductor of electricity.
Therefore, brittle is the substance among these which breaks. Thus, option B is correct.
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A sample in lab displaces 15 mL of water in a graduated cylinder. When placed on a scale the mass is 8.7 g. What is the density of the sample.
Explanation:
Density: mass/volume
8.7/15= 0.58 grams per milliliter
This answer can't be accurate because the question doesnt state the initial volume of water and the mass of the graduated cylinder itself
Is fog homogeneous or heterogeneous? And why?
Which of the following is NOT a source of dissolved oxygen in the water?
A. humans going underwater and exhaling
B. diffusion from the atmosphere
C. aeration as water moves over rocks and debris, and from wind and waves
D. photosynthesis of aquatic plants
Answer:
A. humans going underwater and exhaling
Explanation:
Dissolved oxygen is the oxygen content that can be found in a water body. Oxygen is a gaseous component that dissolves readily in water, however, oxygen dissolves in water via the following sources including diffusion from the atmosphere, aeration as water moves over rocks and debris, and from wind and wave, photosynthesis of aquatic plants.
Humans like every other living organism will undergo cellular respiration and release CO2 (carbon dioxide gas) as a a product during exhalation. Hence, humans going underwater and exhaling cannot be a source of dissolved oxygen.
