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- 1. Multiple ChoiceThe substances listed on the right side of a chemical equation are theYieldsReactantsProductsPrecipitates
- 2. Multiple ChoiceCaCO3 represents a chemicalSymbolFormulaSubscriptReaction
- 3. Multiple ChoiceThe substances listed on the left side of a chemical equation are theProductsCoefficientsPrecipitatesReactants
- 4. Multiple ChoiceIn chemical reactions, what does the principle of conservation of mass mean?Matter is not created or destroyed.The total mass of the reactants is greater than the total mass of the products.The total mass of the reactants is less than the total mass of the products.Matter is not changed.
- 5. Multiple Choice
In balancing chemical equations, we change
Coefficients
Subscripts
Both can be changed
None can be changed
- 6. Multiple ChoiceHow many phosphorus atoms are in PO4?1234
- 7. Multiple Choice
How many hydrogen atoms are in 2 H2?
1
2
3
4
- 8. Multiple ChoiceWhich number should go in the blank?
_ H2 + O2 -> 2 H2O1230 - 9. Multiple Choice
Which number should go in the blank?
2 Na+ _ Cl2 -> 2 NaCl
1
2
3
0
- 10. Multiple ChoiceWhich number should go in the blank?
Mn + _ HNO3 → Mn(NO3)2 + H21230 - 11. Multiple ChoiceWhich number should go in the blank?
Al(NO3)3 + _ NaOH -> Al(OH)3 + 3 NaNO31230 - 12. Multiple ChoiceWhich number should go in the blank?
Al(NO3)3 + _ NaOH -> Al(OH)3 + 3 NaNO31230 - 13. Multiple ChoiceHow many oxygen atoms are present in the following?
4Ca(OH)24681 - 14. Multiple Choice
This is used to represent the amount of each atom in a molecule. What is the arrow pointing to?ExponentCoefficientMoleculeSubscript - 15. Multiple ChoiceHow many Iron (Fe) atoms are in this chemical formula?2 iron atoms6 iron atoms5 iron atoms4 iron atoms
- 16. Multiple Choice
What physical state symbol should be included for water?
(s) - solid
(l) - liquid
(g) - gas
(aq) - aqueous
- 17. Multiple Choice
What physical state symbol should be included for carbon dioxide?
(s) - solid
(l) - liquid
(g) - gas
(aq) - aqueous
- 18. Multiple Choice
What physical state symbol should be included for glucose?
(s) - solid
(l) - liquid
(g) - gas
(aq) - aqueous
- 19. Multiple Choice
What physical state symbol should be included for oxygen?
(s) - solid
(l) - liquid
(g) - gas
(aq) - aqueous
- 20. Multiple Choice
Why does oxygen's symbol have a subscript "2"?
Because it is monoatomic.
Because it is diatomic.
Because it is triatomic.
- Answer choicesTagsAnswer choicesTags