What is formed when hydrogen and oxygen chemically combine?

Chemical Reactions and Mass Conservation

Interactive Video
•
Chemistry, Science
•
6th - 9th Grade
•
Hard

Jackson Turner
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Carbon dioxide
Water
Methane
Hydrogen peroxide
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many grams of water are produced when 2 grams of hydrogen react with 16 grams of oxygen?
18 grams
22 grams
16 grams
20 grams
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the law of conservation of mass, what happens to mass during a chemical reaction?
It is created
It is destroyed
It doubles
It remains constant
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is no new mass created in a chemical reaction?
Because atoms disappear
Because atoms are destroyed
Because atoms are created
Because atoms rearrange
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the total mass of reactants in the given example of hydrogen and oxygen?
16 grams
22 grams
18 grams
20 grams
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many molecules of water are formed from 4 atoms of hydrogen and 2 atoms of oxygen?
3 molecules
4 molecules
2 molecules
1 molecule
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What remains constant in a chemical reaction according to the lecture?
Number of protons
Number of electrons
Number of molecules
Number of atoms
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