Exam 3: Matter

Which of these is an element?

Classify each of the following as an element (A), a compound (B), a homogeneous mixture (C), or a heterogeneous mixture (D). a. table salt ______________ b. chlorine gas ______________ c. sand in water ______________ d. petroleum ______________ e. caffeine ______________

A homogeneous mixture is also called _______________.

A solid substance is not considered matter.

Carbon dioxide can exist only in the gaseous state.

Helium is an example of

All ______________ changes are ______________ changes.

How many of the following are pure compounds? sodium, sugar, oxygen, air, iron

Anything that has mass and volume is called ______________.

Which of the following is an element?

The state of matter for an object that has both definite volume and definite shape is

Classify each of the following as an element (E), a compound (C), or a mixture (M). a. 14K gold _____________ b. pure silver _____________ c. aluminum _____________ d. distilled water _____________ e. tap water _____________ f. brass _____________ g. tungsten _____________ h. sodium chloride _____________ i. air _____________

An example of a chemical change is

Which of the following involves no chemical change?

Which of the following describes a chemical property of gold?