Chemistry Ch 2 Vocab

Question 1

Physical Property

Answer 1

A property that can be specified without reference to another substance and that can be measured without causing a chemical change.

Question 2

Solid

Answer 2

One of the states of matter. A solid consists of tightly packed atomic or molecular sized particles held rigidly in place.

Question 3

Liquid

Answer 3

One of the states of matter. A liquid consists of tightly packed atomic or molecular sized particles that can move past each other.

Question 4

Gas

Answer 4

One of the states of matter. A gas consists of rapidly moving widely spaced atomic or molecular sized particles.

Question 5

Chemical Property

Answer 5

The ability of a substance, either by itself or with other substances, to undergo a change into new substances.

Question 6

Extensive Property

Answer 6

A property of an object that is described by a physical quantity whose magnitude is proportional to the size or amount of the object (e.g., mass or volume).

Question 7

Intensive Property

Answer 7

A property whose physical magnitude is independent of the size of the sample, such as density or temperature.

Question 8

Precision

Answer 8

How reproducible measurements are; the fineness of a measurement as indicated by the number of significant figures reported in the physical quantity.

Question 9

Accuracy

Answer 9

The closeness of a measurement to the true value.

Question 10

Density

Answer 10

The ratio of an object’s mass to its volume.

Question 11

Specific Gravity

Answer 11

A dimensionless property of matter. Its value is determined by dividing the density by the density of water under the same conditions.