Balancing Act
Balance this equation(answer is the ratio):
PCl5 → PCl3 + Cl2
1:1:1
What are reactants?
The substance(s) presented before a chemical equation.
Atoms can't ever be __ or __ in a chemical reaction.
created, destroyed
What is true about the Law of Conservation of Mass?
A. Atoms are destroyed during a chemical reaction.
B. During a chemical reaction, atoms are created
C. Atoms cannot be created or destroyed, only rearranged.
C. Atoms cannot be created or destroyed, only rearranged.
Balance this equation(answer is the ratio):
2H2S + 3O2 → SO2 + 2H2O
1:1:2:1
What are products?
The substance(s) produced after a chemical equation.
What is the term used for the elements and compounds before a chemical reaction takes place?
reactant(s)
The Law of Conservation of Mass that mass is not created or destroyed; it just changes form.
Balance this equation(answer is the ratio):
2Pb(NO3)2 → PbO+ 4NO2 + O2
1:2:1:1
What experiment did Lavoisier test before he came of with the idea the Law of Conservation of Mass?
A. Put a fruit into a sealed container and let it rot.
B. Burned Water
C. Combined ammonia with salt
A. Put a fruit into a sealed container and let it rot.
What is the term used for the elements and compounds after a chemical reaction takes place?
product(s)
How are reactants different from products?
Reactants are different from products because reactants are the substances before a chemical equation. The products are the substances that are produced afterward.
Balance this equation(answer is the ratio):
Sb2S3+ O2 → Sb2O3+ SO2
2:9:2:6
What is matter?
Anything that has mass and takes up space.
How do you know when a chemical equation is balanced?
When the element(s) and compound(s) on both side are the same.
What does the arrow mean in a chemical equation?
A chemical reaction
Balance this equation(answer is the ratio):
4C2H3N+ O2 → CO2 + 6H2O+ NO
1:13:8:1:4
What does balanced mean?
A balanced chemical equation correctly shows that no mass was created or destroyed during the reaction.
What happens to water as it evaporates?
A. A new substances is formed.
B. It becomes less dense water vapor.
C. Atoms are destroyed.
B. It becomes less dense water vapor.
Which is not true about the Law of Conservation of Mass?
A. Nothing is created.
B. New atoms are created when a new substance is formed.
C. Nothing is destroyed.
B. New atoms are created when a new substance is formed.