Which number should go in the blank?
- H₂ + O2 -> 2H₂O
O
2
3
1
Since water can be made of two other substances, it is not an element. Water is a ____________.
Answer:
water is a liquid
Explanation:
WATERRRDR ISSS A LIQUIIIDD
Water is a compound. A compound is made of two or more different elements chemically bonded together. Water is made up of two hydrogen molecules and one oxygen molecule.
Which of the following would result if the gases that are responsible for the greenhouse effect were removed from our atmosphere?
Answer:
Nighttime temperatures would be greatly reduced.
Explanation: