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- 1. Multiple ChoiceAB + CD →AD + CBDouble ReplacementSingle ReplacementSynthesisDecomposition
- 2. Multiple Choice2 C5H5 + Fe --> Fe(C5H5)2single displacementdouble displacementdecompositionsynthesis
- 3. Multiple ChoiceWhich chemical reaction breaks down into 2 substances?Double displacementSingle displacementSynthesisDecomposition
- 4. Multiple ChoiceWhich of the following is an example of synthesis?Na + Br2 --> NaBrKClO3 --> KCl + O2HgO + Cl2-->HgCl + O2Cl2 + NaBr --> NaCl + Br2
- 5. Multiple ChoiceA + BC →B + ACSingle ReplacementDecompositionDouble ReplacementSynthesis
- 6. Multiple ChoiceNO2 →N2 + O2Synthesis (combination)DecompositionSingle replacementCombustion
- 7. Multiple Choice
Is burning wood a chemical or physical change?chemicalphysical - 8. Multiple ChoiceWhich of the following is NOT an example of a physical change?crumpled paperpencil sharpeningshrunken clothingsour milk
- 9. Multiple ChoiceWhich is a chemical change?freezing fruit juiceslicing a potatoboiling watercopper metal turning green
- 10. Multiple ChoiceThe force that holds 2 atoms together is called a ________________.Chemical ReactionChemical BondDiatomic ChemicalGlue
- 11. Multiple ChoiceHow many F atoms are in this compound?
6MgF226812 - 12. Multiple ChoiceHow many Al atoms are in this compound? 4Al2O32864
- 13. Multiple ChoiceIn an endothermic reaction, heat is ,,,taken ingiven out
- 14. Multiple ChoiceIn an exothermic reaction, heat is ...taken ingiven out
- 15. Multiple ChoiceWhat type of reaction occurs in a hand warmerexothermicendothermic
- 16. Multiple ChoiceA student mixed two chemicals to allow them to react. The temperature before the reaction was 25 ° C. The temperature after the reaction was 18° C. Which of the following is true?The temperature changedIt is an endothermic reactionIt is an exothermic reactionTwo of the answers are correct
- 17. Multiple ChoiceWhat is a Chemical Reaction?When two liquids hit each otherWhen a liquid has foamWhen two substances mix and produce new productsWhen a reaction forms with soda and candy
- 18. Multiple ChoiceWhat happens to the bonds when 2 substances reactThey break so new bonds can formNothing the bonds are too strongThey change colour
- 19. Multiple ChoiceIf a chemical reaction is EXOTHERMIC, the temperature would....Stay the sameIncreaseDecrease
- 20. Multiple Choicethe starting materials in a chemical reactionProductsReactantsStartersEnders
- Answer choicesTagsAnswer choicesTags