test 3

Question 1

Solution

Answer 1

A homogeneous mixture that remains constantly in uniformly mixed and has particles that are so small that they cannot be seen with a microscope ( sugar water or iced tea)

Question 2

Suspension

Answer 2

A heterogeneous mixture containing a liquid in which viable particles settle
(muddy water , Italian dressing

Question 3

Signs of chemical change

Answer 3

1 Production of gas
2 Change of color
3 production of a solid without cooling
4 Change in temperature

Question 4

States of matter

Answer 4

SOLID characteristics
a. Fixed volume
b. Fixed shape
LIQUID characteristics
a. Fixed volume
b. No fixed shape
GAS characteristics
a. No fixed volume
b. No fixed shape

Question 5

Melting

Answer 5

Solid to liquid

Question 6

Evaporation

Answer 6

Liquid to gas

Question 7

Sublimation

Answer 7

Solid to gas

Question 8

Freezing

Answer 8

Liquid to solid

Question 9

Condensation

Answer 9

Gas to liquid

Question 10

Law of conservation of mass

Answer 10

Energy cannot be created or destroyed but the matter can only change form

Question 11

Law of conservation of energy

Answer 11

Energy cannot be created or destroyed but the energy can only change form