chem winter final

organic chemistry is the study of ...

• carbon related compounds

• the chemistry of living things

• mathematical modeling

• the identification of the composition of materials

which of the following is an intensive property of matter

• amount of energy

• density

• volume

• mass

an atom is ...

• the smallest unit of matter that maintains its chemical identity

• the smallest unit of a compound

• always made of carbon

• smaller than an electron

a chemical change occurs when

• dissolved minerals solidify to form a crystal

• ethanol is purified through distillation

• salt deposits from evaporated sea water

• a leaf changes color in the fall

a mixture is ...

• a combination of pure substances bonded chemically

• any substance with a uniform composition

• a blend of any two or more kinds of matter, as long as each maintains its own unique properties

• any group of element that are chemically bonded to one another

which of the following is an example of a homogenous mixture

• air

• orange juice

• raw milk

• marble

the horizontal rows on the period table are called

• period

• rows

• groups

• elements

which of the following observations is quantitative

• the liquid turns blue litmus paper red

• the boils at 100C

• the liquid tasted bitter

• the liquid is cloudy

the symbols for units of length in order from largest to smallest are

• m, cm, mm, km

• mm, m, cm, km

• km, mm, cm, m

• km, m, cm, mm

the standard base unit for mass is the

• gram

• cubic centimeter

• meter

• kilogram