chapter 1 matter and measurements

Question 1

Chemistry

Answer 1

the study of matter

Question 2

matter

Answer 2

anything that has mass and takes up space

Question 3

pure substances

Answer 3

fixed composition

Question 4

mixture

Answer 4

combination between two or more pure substances

Question 5

element

Answer 5

made up of one atom

Question 6

compound

Answer 6

made up of multiple elements

Question 7

homogeneous mixture

Answer 7

the same composition throughout the mixture; air, gatorade

Question 8

heterogeneous mixture

Answer 8

doesnt have the same composition throughout; salad;

Question 9

chemical change

Answer 9

a change of materials into another, new materials with different properties and one or more than one new substances are formed

Question 10

physical change

Answer 10

the material involved in the change is structurally the same before and after the change

Question 11

Unit Conversion

Answer 11

K H D b d c m (King Henry Die by drinking chocolate milk

Question 12

mass

Answer 12

the quantity of matter in an object

Question 13

weight

Answer 13

the result of mass acted upon by gravity

Question 14

conversion factor

Answer 14

a ratio of two different units, used as a multiplier to change from one system or unit to another

Question 15

gas

Answer 15

has no definite shape or volume; highly compressible

Question 16

liquid

Answer 16

has no definite shape but a definite volume; slightly compressible

Question 17

solid

Answer 17

has a definite shape and volume; essentially incompressible

Question 18

density

Answer 18

the ratio of mass to volume; d= m/v

Question 19

specific gravity

Answer 19

the density of a substance compared to water

Question 20

energy

Answer 20

the capacity to do work

Question 21

kinetic energy

Answer 21

the energy of motion

Question 22

potential energy

Answer 22

stored energy

Question 23

two forms of potential energy

Answer 23

chemical energy and nuclear energy

Question 24

chemical energy

Answer 24

stored in chemical substances; it is given off when substances take part in chemical reactions

Question 25

Law of conservation of energy

Answer 25

energy can never be created nor destroyed;
energy can be converted from one form to another

Question 26

heating

Answer 26

the energy transfer process when two objects of different temperature are brought into contact

Question 27

1 cal

Answer 27

4.184 joules (J)

Question 28

specific heat (SH)

Answer 28

the amount of heat necessary to raise the temperature of 1.00 g of a substance by 1.00 C

Question 29

amount of heat formula

Answer 29

specific heat x mass x change in temperature