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- 1. Multiple ChoiceA decomposition reaction can be represented as _____________________.AB → A + BA + B → ABAB + CD → AC + BDA + BC → B + AC
- 2. Multiple ChoiceA chemical change in which a single compound breaks down into two or more simpler products is called a ______________________.single-replacement reactionsynthesis reactiondouble-replacement reactiondecomposition reaction
- 3. Multiple ChoiceA chemical change in which two or more substances react to form a new substance is a ____________________________.decomposition reactionsynthesis reactiondouble displacement reactioncombustion reaction
- 4. Multiple ChoiceWhat is decomposition?putting substances togetherbreaking substances apartelement replacing another element in a compoudburning of a subtance
- 5. Multiple ChoiceWhat type of chemical reaction is this?
Al(OH)3 → Al2O3 + H2ODecompositionCombustionSynthesisSingle Replacement - 6. Multiple ChoiceThe number of atoms you begin with in a chemical reaction ...must be the same as the number of atoms you end withmust be an even numbercan be different to the number you finish withchanges depending on how much energy is formed
- 7. Multiple Choice
What reaction type is characterized by the reactant breaking down as the reaction progresses?SynthesisDecompositionCombustionDouble Replacement - 8. Multiple ChoiceWhat is the term for the → sign in a reaction?makesproducesyieldsall are correct
- 9. Multiple Choicethe starting materials in a chemical reactionProductsReactantsStartersEnders
- 10. Multiple Choicea substance that is formed as the result of a chemical reactionProductReactantStartersEnders
- 11. Multiple ChoiceA chemical reaction is...when a substance is mixed with another substancewhen a substance undergoes a change to form a new substancewhen a substance is dissolved into another substancewhen a substance is heated or exposed to another substance
- 12. Multiple ChoiceMass cannot be ____ or _____.made, changedcreated, destroyedrearranged, unmadestagnant, unchanging
- 13. Multiple ChoiceA precipitate is...a solid that falls out of a liquid solutiona reactant in a reactiona clear substancethe mass of a product
- 14. Multiple ChoiceWhich is the name of the kind of solid substance formed in this figure?aqueousprecipitateacidsynthesis
- 15. Multiple Choice
An gel ice pack getting cold after you put it in the freezer for an hour.
Chemical Change
Physical Change
- 16. Multiple ChoiceWhich of the following IS a physical change?Getting a haircutRusty metalsour milkA compound
- 17. Multiple Choice
1. How is a chemical change different from a physical change?
there is no difference
a physical change creates a new substance
a chemical change creates a new substance
- 18. Multiple ChoiceThe right side of the equation below is called theproductsreactants
- 19. Multiple Choice
What type of reaction involves 2 substances combining to form 1 new compound?
Decomposition Reaction
Single Displacement Reaction
Double Displacement Reaction
Synthesis Reaction
- 20. Multiple Choice
2Na +S → Na2S
Double Replacement
Decomposition
Combustion
Synthesis
- 21. Multiple ChoiceWhat is a double replacement?Two compounds react to form two new compounds.One compound reacts to form two separate elements.Two elements reacting to form a single compound.A hydrocarbon and
- 22. Multiple ChoiceThis pictures simulates what type of reaction?SynthesisDecompositionSingle ReplacementDouble Replacement
- Answer choicesTagsAnswer choicesTags