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- 1. Multiple Choice
Matter can not be created nor destroyed: it can only be
Destroyed a little bit
Invisible
Transformed, Changed
None of the above
- 2. Multiple ChoiceIf reaction starts with 20g of reactants it should producea total of 40g of productsa total of 10g of productsa total of 80 g of productsa total of 20g of products
- 3. Multiple ChoiceThe number in front of a compound or element is aSubscriptCoefficientSuperscriptCharge
- 4. Multiple ChoiceThe coefficient in 3H2O is6235
- 5. Multiple ChoiceIn a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have?4g5g9g14g
- 6. Multiple ChoiceBob puts 200 grams of ice into a pitcher with 900 grams of water. He gets distracted and comes back later to find that the ice has melted in the water. How many grams of water does Bob now have in the pitcher?200 g700 g1,100 g
- 7. Multiple Choice
________ are the starting substances in a chemical equation.
Reactants
Producer
Reaction
Products
- 8. Multiple Choice
_________ are the substances that are produced in a chemical reaction.
Reactants
Producer
Reaction
Product
- 9. Multiple Choice
According to the law of conservation of mass, how much mercury was present in the mercury (II) oxide?
55.8 g
64.2 g
60.0 g
126.0 g
- 10. Multiple Choice
Solve for the unknown mass: 6.1 g + ? g = 9.1 g
2.2 g
3 g
15.2 g
- 11. Multiple Choice
According to the law of conservation of mass, how much zinc was present in the zinc carbonate?
256 g
88 g
104 g
40 g
- 12. Multiple ChoiceSubstance that cannot be broken into simpler substanceselementmoleculegramproton
- 13. Multiple ChoiceSubstance made up of chemically combined elementsatomelementelectroncompound
- 14. Multiple ChoiceNumber written below & to the right of a chemical symbolsubscriptreactantproductcoefficient
- 15. Multiple ChoiceHow many nitrogen atoms are in
Fe(NO3)21236 - 16. Multiple ChoiceHow many oxygen atoms are in
Fe(NO3)21236 - 17. Multiple ChoiceA 55-gram egg is placed in a pot. After the egg is boiled, which is most likely the mass of the egg?5055
- 18. Multiple ChoiceRodney tears a piece of paper weighing 1 oz into small pieces. What most likelyhappens to the weight of the sheet of paper after Rodney tears it into pieces?TheThe weight is cut in half.The weight stays the same.
- 19. Multiple Choice
4 grams of hydrogen and 32 grams of oxygen will combine to form:
36 grams of water
28 grams of hydroxide
32 grams of oxygen
36 grams of deuterium
- 20. Multiple Choice
In a chemical reaction, 4 grams of sodium must combine with how many grams of chlorine to produce 10 grams of table salt?
4 grams
6 grams
8 grams
10 grams
- Answer choicesTagsAnswer choicesTags