Test Chp 1-3 Models and Measurements

Question 1

Chemistry is

Answer 1

the study of matter, substance, and model

Question 2

Qualitative Data is

Answer 2

data that has something describing it

Question 3

Quantitative Data is

Answer 3

data that uses a number

Question 4

Ladder Method prefixs are…

Answer 4

King (Kilo) Henery (Hecto) Died (Deka) By (Base) Drinking (Deci) Chocolate (Centi) Milk (Milli)

Question 5

Accuracy

Answer 5

How close the data is to the desired goal or “true” value

Question 6

Precision

Answer 6

How consistant is the data?

Question 7

What is accuracy equation?

Answer 7

accepted-measured/accepted x 100

Question 8

What is percent precision equation

Answer 8

range/2/average x 100

Question 9

Pure substance

Answer 9

A substance that contains a single type of atom

Question 10

Mixture

Answer 10

A substance that contains more than one type of particle

Question 11

Element

Answer 11

Contains a single type of atome

Falls under pure substance

Question 12

Compound

Answer 12

Contains more than one element chemically bonded too form molecule

Pure substance

Question 13

Homogenous Mixture

Answer 13

A mixture with an even distrubtion of particles

Mixture

Question 14

Heterogeneous Mixtures

Answer 14

A uneven distubition of particles

Mixture

Question 15

Physical Properties

Answer 15

Can be used to identify a substance: can be observered/measured without changing chemically identy

Question 16

Physical Properties examples

Answer 16

Density, Melting Point, Boiling Point, Solibility

Question 17

Chemical Properties

Answer 17

How one substance chemically reacts to another

Question 18

Matter

Answer 18

Anything that has mass and takes up space

Question 19

Mass

Answer 19

A measurement of the amount of matter

Question 20

Volume

Answer 20

A measurement of the space the matter occupies

Question 21

Density

Answer 21

Mass and volume put together the amount of mass in a given model

Question 22

Density Equation

Answer 22

Mass/ volume