Chem 2-8 Wednesday

the number of protons in the nucleus of an element

• atomic number

• mass number

• atomic mass

which state of matter has a definite volume ad takes the shape of its container

• solid

• liquid

• gas

which state of matter takes both the shape and volume of its container

• solid

• liquid

• gas

which state of matter is characterized by having a definite shape and a definite volume

• solid

• liquid

• gas

which of the following is a physical change

• corrosion

• explosion

• evaporation

• rotting of food

which of the following is a heterogeneous mixture

• air

• salt water

• steel

• soil

which of the following is a homogeneous mixture

• salt water

• beef stew

• sand and water

• soil

what is one difference between a mixture and a compound

• a compound consists of more than one phase

• a compound can only be separated into its components by chemical means

• a mixture can only be separated into its components by chemical means

• a mixture must be uniform in composition

the first figure in a properly written chemical symbol always is

• boldface

• capitalzed

• italicized

• underlined

which of the following is not a physical change

• grating cheese

• melting cheese

• fermenting of cheese

• mixing two cheeses in a bowl