Formulas and Matter/Energy

Question 1

Density formula

Answer 1

D= Mass/volume

Question 2

M(ass) formual

Answer 2

M=Volume X Density

Question 3

Volume formula

Answer 3

V= Mass/ density

Question 4

Pure substance definition

Answer 4

A fixed or definite composition

Question 5

Mixture definition

Answer 5

Contain 2 or more different substances that are physically mixed but not chemically

Question 6

What are the 2 types of pure substances?

Answer 6

Elements
Compounds

Question 7

What are the 2 types of mixtures?

Answer 7

Homogenous
Heterogenous

Question 8

How to turn Celsius to F?

Answer 8

F= 1.8(C)+32

Question 9

How to turn F to celsius?

Answer 9

C= (F)-32/ 1.8

Question 10

What do physical changes include?

Answer 10

Changes in shape
Physical State
Boiling and freezing point
Density
Color

Question 11

What is considered absolute 0?

Answer 11

-273 K

Question 12

What is the lowest temperature in the universe?

Answer 12

4 Kelvin

Question 13

How does Kelvin scale to Celsius?

Answer 13

0 Celsius= +273 Kelvin

Question 14

Formula for kinetic energy

Answer 14

Ek= 1/2 mv^2

Question 15

Formula for potential energy

Answer 15

Ep= mgh