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- 1. Multiple Choice
Count the atoms from each element on the reactant and product sides of the chemical equation. Is this chemical equation balanced or unbalanced?
balanced
unbalanced
- 2. Multiple Choice
An atom's ability to undergo a chemical reaction is determined by ___________.
valence electrons
protons
neutrons
innermost electrons
- 3. Multiple Choice
Which of the following is NOT a factor of chemical reaction?
valance electrons
energy
chemical bonds
protons
- 4. Multiple Choice
A chemical reaction is also called a chemical change.
true
false
- 5. Multiple Choice
Count the atoms for each element on the reactant and product sides of the chemical equation. Is the chemical equation balanced or unbalanced?
balanced
unbalanced
- 6. Multiple Choice
During a chemical reaction, reactant atoms(mass) are _________ to the product atoms(mass).
equal
different
more
less
- 7. Multiple Choice
What does a chemical equation represent?
matter classification
chemical reactions
isotopes
neutral atoms
- 8. Multiple Choice
Count the atoms for each element on the reactant and product sides of the chemical equation. Is this chemical equation balanced or unbalanced?
balanced
unbalanced
- 9. Multiple Choice
Endothermic or Exothermic?
endothermic
exothermic
- 10. Multiple Choice
The coefficient in a chemical formula equals the number of ______.
atoms
protons
molecules
- 11. Multiple Choice
Count the atoms of each element on both sides of the chemical equation. Is this chemical equation balanced or unbalanced?
balanced
unbalanced
- 12. Multiple Choice
Endothermic or Exothermic?
endothermic
exothermic
- 13. Multiple Choice
If you start with 20 grams of hydrogen on the reactant side, how many grams of hydrogen should you end with on the product side?
10 grams
15 grams
0 grams
20 grams
- 14. Multiple Choice
The substances formed as a result of a chemical reaction are called ________.
reactants
products
subscript
coefficient
- 15. Multiple Choice
A chemical equation must be balanced in order to show the mass is conserved during a reaction.
true
false
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