1) A compound is a) two or more atoms joined together b) a mixture of elements c) two or more different atoms joined together 2) Which of the following represent a compound? a) A b) B c) C 3) Which of the following represent a single element? a) A b) B c) C 4) Which three elements are combined in calcium nitrate? a) carbon b) calcium c) nitrogen d) natroen e) nickogen f) oxygen 5) Which three elements are combined in magnesium carbonate? a) manganese b) magnesium c) carbite d) carbon e) calcium f) oxygen 6) Which three elements are combined in lithium sulfate? a) lithium b) lithamide c) sulfur d) suffer e) oxygen f) hydroxide 7) Pick all substances that are element from the answers below. a) K b) O2 c) NaCl d) Al e) Ca f) CaCl2 8) Pick all substances that are compounds from the answers below. a) H2 b) Al c) H2O d) CaCl2 e) NaCl f) O2 9) The formula for sulfur dioxide is SO2. How many different elements are combined in sulfur dioxide? a) 0 b) 1 c) 2 d) 3 e) 4 f) 5 10) The formula for sulfur dioxide is SO2. How many atoms of oxygen are combined with each atom of sulfur? a) 0 b) 1 c) 2 d) 3 e) 4 f) 5 11) The formula for water is H2O. Which two elements are combined in water? a) water b) hydroxide c) hydrogen d) hydronidum e) oxygen f) oxychloride 12) The formula for water is H2O. How many total atoms are combined in water? a) 0 b) 1 c) 2 d) 3 e) 4 f) 5 13) The compound with the formula CO is called carbon monoxide. Suggest why it is not simply called carbon oxide. a) Because there is more than one oxygen b) Because there is only one oxygen c) Because there are two oxygens d) Because there are no oxygens 14) What is the name of the compound with the formulae MgO? a) Manganese Oxide b) Magnesium Carbonate c) Magnesium Sulfate d) Magnesium Oxygen e) Magnesium Hydroxide f) Magnesium Oxide 15) What is the name of the compound with the formulae NaCl? a) Sodium Oxide b) Sodium Hydroxide c) Sodium Chloride d) Chlorine sodiumide e) Sodium Chlorine f) Sodium Carbonate 16) What is the name for CaCl2? a) Chlorine calciumide b) calcium chlorine c) chlorine calcide d) calcium chloride e) carbon chloride f) carbonochloride 17) NaOH is sodium hydroxide. KOH is potassium hydroxide. Which two elements are always in hydroxide? a) potassium b) hydrogen c) oxygen d) sodium e) carbon f) water 18) What is the name of the compound with the formula LiOH? a) Lithium hydroxide b) hydrogen lithiumide c) lithium hydride d) lithium hydrogen oxygen e) hydrogen oxygen lithium f) lithiumoxidehydrogen 19) How many different elements are in LiOH? a) 0 b) 1 c) 2 d) 3 e) 4 f) 5
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Y7 2.6 Concept Check - Compounds
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