Answer:
Observing what the substance looks (color, size, texture) or smells like (odor). Objects can be made up of the same substance, but they differ in the properties of size, mass, and volume.
Explanation:
The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion. Analyzing the reactants and products of a given reaction will allow you to place it into one of these categories. Some reactions will fit into more than one category.
Answer:
1.Color Change.
2.Production of an odor.
3.Change of Temperature.
4.Evolution of a gas (formation of bubbles)
5.Precipitate (formation of a solid)
Sodium chloride (NaCl) is made from ___ of sodium (Na) and ___ of chlorine (Cl).
Blanks: One Atom and Two Atom
Answer:
one atom, one atom.
Explanation:
Sodium chloride is made from one sodium atom and one chlorine atom.
Sodium has a charge of +1, Chlorine has a charge of -1. These cancel each other out leaving only one atom for both sodium and chlorine.
1. What is the affect of increasing the temperature of the water?
2. What happens when you add pollution to the water?
3. Can coral survive bleaching?
4. What is coral?
Answer:
1. lower levels of dissolved oxygen due to the inverse relationship that exists between dissolved oxygen and temperature
2. water pollution can cause water to become toxic to humans and the environment.
3. corals can survive a bleaching event but they are under more stress and are subject to mortality.
4. corals are marine invertebrates within the class anthozoa of the phylum Cnidaria.
Answer:
The answer to #1 is the water molecules spread out and move faster.
The answer to #4 is a tiny soft-bodied animal that typically lives within a stony skeleton grouped in large colonies
help plsss i need it
Answer:
A
Explanation:
A would be the best place due to the fact that it is the farthest distance from the fulcrum. Since the sheep (or the load) is at the very end of the pole, the effort (force) would need to also be at the end of it to lift the sheep the easiest.
For her farm, Susan is interested in increasing the number of chickens that lay the most eggs per week. Many of the chickens on her farm lay 6 eggs a week. A few female chickens (hens) lay as many as 8 eggs per week, while other female chickens only lay 4 eggs per week. Describe what Susan can do to increase the number of eggs produced on her farm.
Answer:
Susan should probably Quality Feed the chickens.
Explanation:
Quality Feed has a special formula that helps the hens have more. It also makes them big. You don't have to go crazy with some cutting-edge feed that's guaranteed to make your chickens produce eggs the size of a garden gnome
I'm not sure this is the answer that you want so I'm sorry if it isn't
Explain The process of Photosynthesis according to the chemical formula: Identify: The reactants(input), the products(outputs), and the energy source. **(Hint: Carbon Dioxide + Water = Glucose + Water)
Answer: 6CO2 + 6H2O → C6H12O6 + 6O2
Explanation:
The equation for photosynthesis is 6CO2 + 6H2O → C6H12O6 + 6O2.
HELP ASAP. GIVING BRAINLIEST
Answer:
1) Pecan tree 1 and Pecan tree 4
2) I don't know
Explanation:
Choose all the answers that apply.
Nitrogen has an atomic number of 7. Its atomic mass is 14. Nitrogen has _____.
seven electrons
seven neutrons
seven electron shells
23 neutrons
14 electrons
Please help (:
GIVING BRAINLIEST!!!
Answer:
Pecan trees 1 and 4
Explanation:
1: 1 and 4
2a: With good soil and good parent plants
2b: Heredity
Answer:
Explanation:
1 and 4
With good soil and good parent plants
Heredity
What are two results of the uneven heating of Earth's surface?
The corn crop in an area is prone to infestation by larvae from moths that feed on the cornstalks and ears of corn. The techniques used by two farmers to protect the corn crop are described below.
Technique A: Sprayed his corn crop with an insecticide. The insecticide is known to kill all honeybee, butterfly, and moth larvae.
Technique B: Used a genetically modified variety of corn. The plant produces an insecticide which selectively kills only the moth larvae as it feeds on the corn.
Which technique is likely to have less of an impact on the environment?
Technique B because it may help humans who consume corn to fight bacteria
Technique A because it kills a broader variety of insects to protect the corn
Technique B because it preserves the harmless insects and targets only the moth larvae
Technique A because insecticide use is better for preserving the environment.
Answer:
Its C
Explanation:
Method A puts a type of spray that kills bees plus butterfly's which would make their population decrease. Which isnt helpful and harms the enviroment a lot. Answer A dosent make sense it may be harmful
Answer: c
Explanation:
I took the quiz
The chemical formula for sulfuric acid is H2SO4. In one molecule of sulfuric acid, there are _____.
two atoms of helium
two atoms of oxygen
four atoms of oxygen
four atoms of sulfur oxide
Please help for my summer school, you can take your time (:
Answer:
four atoms of oxygen
Explanation:
two atoms of hydrogen
one sulphur atom
Which two changes of state can occur when a substance gains thermal energy A sublimation b depositation c condensation and d vaporization
Answer:
b
Explanation:
Answer:
A and D
Explanation:
I got it on my test
If a chromosome folds, how is transcription prevented?
Question 2 options:
The DNA region is easily accessible.
The DNA region is not easily accessible.
The RNA region is not easily accessible.
The RNA has already been made.
Answer:
The DNA region is not easily accesible.
Explanation:
Name the following compounds:
a. NaBr
b. MgCl2
C. Lil
d. Cao
e. CuBr2
f. Feo
WHOEVER ANSWERS FIRST WILL BE BRAINLIEST AND WILL GET 5 STARS
Answer:
a. Sodium bromide
b. Magnesium chloride
c. lithium iodide
d. calcium oxide
e. copper bromide
f. iron oxide
Each element has a different:
number of protons and electrons
atomic mass and weight
Properties and characteristics
number of neutrons
Please take your time if needed!
Answer:
(C. Properties and characteristics.
Hope this helpos!
Explanation:
I need help with this
Answer:
The mass and physical structure of the body has changed.
The amount of molecules has changed and formed a new substance.
Explanation:
Hope that I helped you!
NEED HELP ASAP!!!!!!!!! PLEASE ANSWER IN 10 minutes or under
What are the two possible benefits of the new plastic bag?
Answer:
The new bag helps food last longer. Less food is wasted, and more money is saved.
Explanation:
PLATO
Imagine that you and your friend are at the beach. You have your chairs and umbrella set up in the perfect spot near the water so you can jump in to cool off with ease. A few hours into your stay, the water line has managed to creep up closer and closer to your chairs and your things start to get wet! Your friend points up at the Moon and says it is to blame. What does this mean? Write a response in complete sentences. plz someone help!!!!!!!
Answer: High tides and low tides are caused by the moon. The moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the moon and the side farthest from the moon. ... When you're not in one of the bulges, you experience a low tide.
im giving brainliest
Answer:
a
Explanation:
just needed the points, sorry
Answer:
I'm confused what is this?
Explanation:
I need help, ACTUAL ANSWERS PLEASE
13. will any of the bulbs light if you open the switch?
14. which bulbs would continue to shine if bulb 1 broke? which would shine if bulb 2 broke instead? Explain.
Answer:
14.None would shine if bulb 1 broke
Explanation:
Bulb one connects all the other bulbs to the switch. If bulb 2 broke instead only 1 and 3 will shine because bulb 2 is not connected to bulb 3. all the bulbs should light when the switch is on.
I dont think I actually got this right pls dont take my answer for fact.
Select all that apply.
Which items are properties of bases?
soapy
sour
bitter
slick
skin damage
Please
Answer:
soapy and bitter
Explanation:
Which is NOT needed to START a wildfire.
1. Wind
2. dry debris
3. oxygen
4. unattended campfire
I'm trying to see if I'm correct, I think it's Dry Debris.
Answer:
you are correct
Explanation:
Answer: no oxygen is the wright answer
Explanation:
Because it only helps to burn a fire it does not make fire
The magnetic field of an object exerts a force on any magnetic object around it.
True or False
Answer: True
Explanation: this is true
Hydrogen peroxide is commonly used to clean cuts and wounds. Its chemical formula is
H2O2. This compound has _____.
two atoms of hydrogen
three atoms of oxygen
three atoms of hydrogen
one atom of oxygen
Please help, take your time!
Answer:
two atom of hydrogen,two atom of oxygen
Which 3 characteristics are used to describe all waves, regardless of type? Check all that apply.
Resting Position
Frequency
Trough
Amplitude
Crest
Wavelength
Elements in the same group have _____.
the same number of electron shells
the same number of protons
similar chemical properties
the same number of isotopes
Answer:
Element in the same group have similar chemical properties.
Movement caused by warmer fluids rising and cooler fluids sinking is called ______________.
Answer:
I think it's Convection current.
Hope that helps. x
Answer: Convection is the process of warm fluids rising and cooler fluids sinking. Inside the Earth, convection is powered by heat mostly from the core. The slow circulation of rock in the mantle moves the tectonic plates at the surface.
Explanation: Can I have brainliest
For example," "however," and "also" are examples of:
conjunctions
introductory words
nouns
adjective
Answer:
conjunctive adverbs
Explanation:
Some examples of conjunctive adverbs are: accordingly, also, besides, consequently, finally, however, indeed, instead, likewise, meanwhile, moreover, nevertheless, next, otherwise, still, therefore, then, etc.
The magnetic field of an object exerts a force on any magnetic object around it.
True
or
False
