Chemical reactions
Quiz by Matthew Szeremeta
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8 questions
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- Q1What happens to atoms in a chemical reaction?RearrangedDestroyedDoubledMultiplied30s
- Q2Which of the following is an example of a chemical reaction?Cutting a piece of paperShattering a glassBurning a piece of paperMelting an ice cube30s
- Q3What is the balanced chemical equation for the reaction between hydrogen gas (H2) and oxygen gas (O2) to form water (H2O)?H2 + O2 -> HO22H2O -> 2H2 + O22H2 + O2 -> 2H2OH2 + O2 -> H2O30s
- Q4What is a chemical reaction?A process in which substances undergo chemical changes to form new substancesA process in which substances change their physical stateA process in which substances combine to form mixturesA process in which substances are separated into their components30s
- Q5Which of the following is an example of a chemical change?Breaking a glass bottleMelting an ice creamCutting a piece of paperRusting of iron30s
- Q6Which of these is an example of thermal decomposition?Shining light on silver nitrateReacting oxygen and hydrogenHeating calcium carbonateAdding hydrochloric acid to sodium hydroxide30s
- Q7Which of these equations shows a synthesis reaction?Glucose + Oxygen → Carbon dioxide + WaterCalcium carbonate → Calcium oxide + Carbon dioxideCopper Oxide + Sulphuric acid → Copper sulphate + WaterSodium + Chlorine → Sodium chloride30s
- Q8If I react an acid and a metal, what will be produced?Salt + WaterAcid + SaltSalt + Hydrogen + Carbon dioxideSalt + Hydrogen30s