Chapter 1: Changes And Matter

Question 1

Anything that has mass and takes up space

Answer 1

Matter

Question 2

The smallest unit of an element that maintains the chemical identity of that element

Answer 2

Atom

Question 3

A pure substance that cannot be broken down into simpler substances and is made of one type of atom

Answer 3

Element

Question 4

A substantive that can be broken down into simpler substances. Each is made from the atoms of two or more elements that are chemically bonded

Answer 4

Compound

Question 5

A characteristic that can be observed or measured without changing the identity

Answer 5

Physical property

Question 6

A change in a substance that does not involve a change in identity of the substance

Answer 6

Physical change

Question 7

Relates to a substances ability to undergo changes that transform into different substances

Answer 7

Chemical property

Question 8

A change in which one or more substances are converted into different substances

Answer 8

Chemical change

Question 9

A blend of two or more kinds of matter, each of which retains its own identity and properties

Answer 9

Mixture

Question 10

Solution

Answer 10

Uniform in composition

Question 11

Not uniform throughout

Answer 11

Heterogeneous

Question 12

Has a fixed composition and differs from a mixture

Answer 12

Pure substance

Question 13

A solid that forms from two liquids

Answer 13

Precipitate

Question 14

Horizontal rows

Answer 14

Period

Question 15

Vertical rows

Answer 15

Group

Question 16

Soft - reactive with water - low density - not found free in nature

Answer 16

Alkali metals

Question 17

Reactive with acids - low density - not found free in nature

Answer 17

Alkaline metals

Question 18

Nonmetal - very reactive - all have colored gases - not found free in nature

Answer 18

Halogens

Question 19

Nonmetal - nonreactive - low m.p. and b.p. - only found free in nature

Answer 19

Noble gases

Question 20

A measure of the amount of matter

Answer 20

Mass