Chp. 9-11

Question 1

Mixture

Answer 1

• A mixture consists of two or more substances mingled together but not chemically combined e.g. sand and water.
• There are four methods of separating mixtures

Question 2

Filtration

Answer 2

Used to separate small insoluble solids (do not dissolve in a liquid) from a liquid by using filter paper and a funnel to trap the solids.

Question 3

Residue

Answer 3

The dirt left over on the filter paper

Question 4

Chromatography

Answer 4

Used to separate a mixture of dissolved substances in a solution E.g. the different colors in a black marker.
Fig 19.13 and 19.14 pg 167

Question 5

Matter

Answer 5

anything that takes up space and has mass

Question 6

Mass

Answer 6

a measure of the amount of matter in an object

Question 7

States of matter

Answer 7

three states that matter can exist in solid, liquid and gas

Question 8

Solid

Answer 8

atoms are close together, they vibrate to transfer energy. Cannot flow, fixed shape. e.g. wood, rock

Question 9

Liquid

Answer 9

atoms are less close that solid, but still close. Particles can move around. Liquids can flow and change shape. e.g. water, milk

Question 10

Gas

Answer 10

particles are spread out. Gases can flow and change shape. e.g. air, oxygen

Question 11

Particles

Answer 11

suggestion that everything is made up of small parts.

Question 12

Particle theory

Answer 12

scientists believe that everything is made from very small particles.

Question 13

Viscosity

Answer 13

the flow rate of a liquid. Water is less viscous (more runny) than maple syrup.

Question 14

Diffusion

Answer 14

the spreading out of particles to fill the space they are in.

Question 15

Mixture

Answer 15

consists of two or more substances mingled together but not chemically combined

Question 16

Filtration

Answer 16

used to separate an insoluble solid and a liquid

Question 17

Insoluble

Answer 17

does not dissolve in a liquid

Question 18

Soluble

Answer 18

Dissolves ina liquid

Question 19

Residue

Answer 19

the soil left in the filter paper after filtration

Question 20

Filtare

Answer 20

the clean water that comes after filtration

Question 21

Evaporation

Answer 21

used to separate a soluble solid from a liquid e.g. salt and water

Question 22

Solvent

Answer 22

the liquid that a solid is dissolved into

Question 23

Solute

Answer 23

the solid that is left behind after evaporation

Question 24

Distillation

Answer 24

method of separation used to separate a soluble solid and its solvent, or two miscible liquids with different boiling points

Question 25

Miscible

Answer 25

Liquids that mix together e.g. alcohol and water

Question 26

Liebig condenser

Answer 26

piece of equipment used in distillation in which cool water flows to condense

Question 27

Distillate

Answer 27

clean water at the end of distillation

Question 28

Chromatography

Answer 28

used to separate mixtures of substances that are in a solution e.g. dyes in ink

Question 29

Chromotagram

Answer 29

chromatography paper with separated ink

Question 30

Atom

Answer 30

A tiny path

Question 31

Element

Answer 31

a substance made up of only one type of atom.

Question 32

Chemical Symbol

Answer 32

The letter or letters used on the Periodic table to represent elements

Question 33

Subatomic Particles

Answer 33

the small particles that make up an atom

Question 34

Protons

Answer 34

A positively charged particle located in the nucleus of an atom

Question 35

Neutrons

Answer 35

A neutrally charged particle located in the nucleus of the atom

Question 36

Electrons

Answer 36

A negatively charged particle, located on shells that orbit the nucleus of the atom

Question 37

Atomic numbers

Answer 37

the number of protons in the atom of that element

Question 38

Mass numbers

Answer 38

the total number of protons and neutrons in an atom

Question 39

Atomic Structure

Answer 39

the idea proposed by Niels Bohr that electrons orbit the nucleus, in shells.