Chapter 15 Vocab Cards

Question 1

chemical change

Answer 1

A change of one substance to another. Pg. 462

Question 2

chemical property

Answer 2

A characteristic of a substance that indicates whether it can undergo a certain chemical change. Pg. 461

Question 3

colloid

Answer 3

A type of mixture with particles that are larger than those in solutions but not heavy enough to settle out. Pg. 454

Question 4

compound

Answer 4

A substance in which the atoms of two or more elements are combined in a fixed proportion. Pg. 452

Question 5

distillation

Answer 5

The process for separating substances in a mixture by evaporating a liquid and recondensing its vapor. Pg. 461

Question 6

heterogeneous mixture

Answer 6

A mixture in which different materials can be distinguished easily. Pg. 453

Question 7

homogeneous mixture

Answer 7

Contains two or more gaseous, liquid, or solid substances blended evenly throughout. Pg. 454

Question 8

law of conservation of mass

Answer 8

The mass of all substances that are present before a chemical change equals the mass of all the substances that remain after the change. Pg. 465

Question 9

physical property

Answer 9

Any characteristic of a material that you can observe without changing the identity of the substances that make up the material. Pg. 458

Question 10

solution

Answer 10

A homogeneous mixture of particles so small that they cannot be seen with a microscope and will never settle to the bottom of their container. Pg. 454

Question 11

substance

Answer 11

A type of matter with a fixed composition. Pg. 450

Question 12

suspension

Answer 12

A heterogeneous mixture containing a liquid in which visible particles settle. Pg. 456

Question 13

Tyndall effect

Answer 13

The scattering of light by colloidal particles. Pg. 455

Question 14

element

Answer 14

If all the atoms in a substance have the same identity, that substance is a(n) … Pg. 450

Question 15

physical change

Answer 15

A change in size, shape, or state of matter. Pg. 460