Matter

Question 1

Matter

Answer 1

Anything that has volume and mass

Question 2

Volume

Answer 2

the amount of space a substance takes up; standard unit is Liter for liquids.

Question 3

Ways to measure volume of a solid object

Answer 3

1) . Volume = L x W x H
2) . Displacement = difference between the beginning level of water and the level of water after object is added

Question 4

Mass

Answer 4

the amount of material (or matter) in a substance; measured by comparing an unknown mass with a known mass; measured by a balance; measured in grams/kilograms

Question 5

Weight

Answer 5

measures the amount of force gravity exerts on the matter. An object with greater mass weighs more, if they are both in the same location. It is dependent on GRAVITY. Jonathan would weigh less on the moon than on Earth.

Question 6

Density

Answer 6

amount of matter in a certain volume; Density = mass/volume

Question 7

physical property

Answer 7

characteristic that can be observed without changing the identity of the substance. Such as: color, texture, smell, density, ability to conduct electricity

Question 8

Solid

Answer 8

state of matter where substance had definite shape and volume. Particles are close.

Question 9

Liquid

Answer 9

state of matter in which substance has defined volume but not a definite shape. Particles move more in liquids than solids. They take shape of the container

Question 10

Gas

Answer 10

state of matter in which there is no defined shape or determined volume. They can be easily compressed (i.e. balloon). Takes shape of container. Particles are very active. Weak attraction to each other.

Question 11

physical change

Answer 11

change of matter that does not form a new substance. i.e breaking a rock into smaller size Also occurs when there is a change in state of matter, such as solid to liquid

Question 12

Melting

Answer 12

changing from a solid to a liquid

Question 13

Freezing

Answer 13

changing from a liquid to a solid; another word for it is solidifying (like melted chocolate hardens at room temp)

Question 14

Vaporization

Answer 14

changing from a liquid to a gas - i.e. water boils and becomes steam. Temp at which it occurs is Boiling Point. Another word is evaporation.

Question 15

Condensation

Answer 15

changing from a gas to liquid - i.e. drops of water on outside of a glass

Question 16

Atoms

Answer 16

small particles that make up all matter; most matter contains more than one kind of atom

Question 17

Element

Answer 17

Matter than contains only 1 kind of atom; examples: gold, silver, oxygen

Question 18

Molecules

Answer 18

a particle formed when atoms form with other atoms

Question 19

Compound

Answer 19

formed by combining atoms of different elements; it is different from the elements that are used to form it; every molecule of a compound is identical

Question 20

Chemical change

Answer 20

occurs when atoms in an element or compound combine to make a new substance; example: rust, brownies

Question 21

mixture

Answer 21

consist of two or more substances that are physically combined; the particles of each substance in mixture keep their identity.

Question 22

How can you separate substances in mixtures?

Answer 22

1. separate based on how they look
2. separate based on size
3. separate based on density

Question 23

Solution

Answer 23

mixture in which all substances are spread evenly throughout.

Question 24

Solute and Solvent

Answer 24

Solute = substance that is dissolved

Solvent = the substance that dissolves the other substance; water is the most common

Question 25

Concentration

Answer 25

Amount of solute that is dissolved in the solvent

Question 26

Solubility

Answer 26

the ability of a solvent to disolve a certain amount of solute

Question 27

3 ways to speed up the rate the solute dissolves in solution

Answer 27

1. increase the temp
2. stir it
3. let it sit