Ch 1 Vocab

Question 1

Chemistry

Answer 1

A science dealing with the structure, composition and properties of items and with the transformations that they undergo

Question 2

Chemical

Answer 2

A compound or substance that has been purified or prepared especially artificially

Question 3

Mass

Answer 3

A body of coherent matter, usually of indefinite shape and often of considerable size

Question 4

Matter

Answer 4

The substance or substances of which any physical object consists or is composed

Question 5

Atom

Answer 5

The smallest component of an element having the chemical properties of the element

Question 6

Element

Answer 6

A component or constituent of a whole or one of the parts into which a whole may be resolved by analysis

Question 7

Compound

Answer 7

Composed of two or more parts or elements

Question 8

Extensive property

Answer 8

A property that depends upon the amount of material in a sample

Question 9

Intensive property

Answer 9

Property of matter that does not change as the amount of matter changes

Question 10

Physical property

Answer 10

And property that is measurable whose value describes a state of a physical system

Question 11

Physical change

Answer 11

Changes affecting the form of a chemical substance but not it’s chemical composition

Question 12

Change of state

Answer 12

A change from one state to another

Question 13

Solid

Answer 13

A change from one state to another without a change in chemical composition

Question 14

Liquid

Answer 14

Phase of matter in which atoms or molecules can move freely while remaining in contact with one another. Liquid takes shape of its container

Question 15

Gas

Answer 15

Change from one state to another without a change in chemical composition

Question 16

Plasma

Answer 16

The liquid part of blood or lymph, as distinguished from the suspended elements

Question 17

Chemical property

Answer 17

A property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed

Question 18

Chemical change

Answer 18

Irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition

Question 19

Chemical reaction

Answer 19

Breaking down or formation of bonds

Question 20

Reactant

Answer 20

Starting materials in a chemical reaction

Bonds r broken and new ones r formed

Question 21

Group

Answer 21

A column of elements

Up down

Question 22

Family

Answer 22

A row of elements

Side to side

Question 23

Period

Answer 23

The name of a horizontal row whose elements have the same number of electron shells

Question 24

Metal

Answer 24

3 types of metals

A substance in its pure state

Question 25

Nonmetal

Answer 25

An element not having the character of a metal, as carbon or nitrogen

Question 26

Metalloid

Answer 26

A nonmetal that in combination with a metal forms an alloy