1) A row going across the periodic table is called a _____. a) group b) family c) period d) column 2) A column going down the periodic table is called a _____ or _____. a) group, family b) period, row c) group, period d) period, family 3) Identify the atomic number for silicon. a) 14 b) 28.0855 c) Si d) Silicon 4) Identify the atomic mass of silicon. a) 14 b) 28.0855 c) Si d) Silicon 5) The only nonmetal found on the left side of the periodic table is _____. a) helium b) mercury c) lithium d) hydrogen 6) _____ are pure substances that can’t be broken down into simpler substances by ordinary chemical means. a) mixtures b) elements c) compounds d) molecules 7) The smallest part of an element that has all the properties of that element is an _____. a) molecule b) compound c) mixture d) atom 8) A _____ is a substance made of two or more elements that are chemically bonded. a) element b) compound c) mixture d) atom 9) The most abundant element in the atmosphere is _____. a) oxygen b) helium c) hydrogen d) nitrogen 10) Sodium chloride is an example of a _____ because it contains two or more elements. a) compound b) element c) mixture d) monoatomic molecule 11) The chemical formula CO2 represents a molecule that contains _____ atom(s) of carbon and _____ atom(s) of oxygen. a) two, one b) one, two c) one, one d) two, two 12) The molecule H2C2H3O2 has _____ total atoms. a) one b) four c) eight d) nine 13) Water and salt are examples of _____. a) elements b) compounds c) mixtures d) monoatomic molecules 14) Au, F, and O are examples of _____. a) elements b) compounds c) mixtures d) molecules 15) CO2, H2O, and CH4 are examples of _____. a) elements b) compounds c) mixtures d) metals 16) Air and orange juice are examples of _____. a) elements b) compounds c) mixtures d) monoatomic molecules 17) A _____ is a combination of substances that are not chemically combined. a) element b) compound c) mixture d) molecule 18) In a _____ mixture, the substances are not mixed evenly and the composition is easily identified. a) heterogeneous b) homogeneous c) diatomic d) compound 19) In a _____ mixture, the mixture has evenly distributed components and is the same throughout making identification of the composition difficult. a) heterogeneous b) homogeneous c) diatomic d) compound 20) Trail mix is an example of a _____ mixture. a) heterogeneous b) homogeneous c) diatomic d) compound 21) Saltwater is an example of a _____ mixture. a) heterogeneous b) homogeneous c) diatomic d) compound 22) _____ are shiny, malleable, and hard. a) metals b) nonmetals c) metalloids d) gasses 23) Metals are _____ of electricity and heat. a) bad conductors b) made of c) good conductors d) destroyed by 24) Nonmetals usually _____ conduct heat or electricity very well. a) can b) do c) do not d) rapidly 25) _____ are brittle, meaning they break easily. a) metals b) nonmetals c) metalloids d) gasses 26) _____ share characteristics with metals and nonmetals. a) metals b) molecules c) metalloids d) gasses 27) Monoatomic means only _____ atom. a) one b) two c) three d) four 28) Diatomic molecules have two of the _____ type of atom bonded. a) compound b) different c) equal d) same

Elements, Compounds, Mixtures

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