Chapter 9-11

Question 1

Residue

Answer 1

Is the dirt left after you filtrate

Question 2

Chromatography

Answer 2

Used to separate a mixture of dissolved substances in a solution. Eg th pe different colors in a black marker

Question 3

Matter

Answer 3

anything that takes up space and mass

Question 4

Mass

Answer 4

: a measure of the amount of matter in an object

Question 5

States of matter

Answer 5

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

Question 6

Solid

Answer 6

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

Question 7

Liquid

Answer 7

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

Question 8

Gas

Answer 8

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

Question 9

Particles

Answer 9

suggestion that everything is made up of small parts.

Question 10

Particle theory:

Answer 10

scientists believe that everything is made from very small particles.

Question 11

Viscosity

Answer 11

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

Question 12

Diffusion

Answer 12

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

Question 13

Mixture

Answer 13

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

Question 14

Filtration

Answer 14

used to separate an insoluble solid and a liquid

Question 15

Insoluble

Answer 15

does not dissolve in a liquid

Question 16

Soluble

Answer 16

dissolves in a liquid

Question 17

Residue

Answer 17

the soil left in the filter paper after filtration

Question 18

Atom

Answer 18

a tiny particle

Question 19

Element

Answer 19

a substance made up of only one type of atom.

Question 20

Chemical symbol:

Answer 20

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

Question 21

Subatomic particles

Answer 21

the small particles that make up an atom

Question 22

Protons

Answer 22

a Positively charged particle located in the nucleus of an atom

Question 23

Neutrons

Answer 23

A neutrally charged particle located in the nucleus of the atom

Question 24

Electrons

Answer 24

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

Question 25

Atomic number

Answer 25

the number of protons in the atom of that element

Question 26

Mass number

Answer 26

the total number of protons and neutrons in an atom

Question 27

Atomic structure

Answer 27

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

Question 28

Electronic configuration:

Answer 28

Describing the location of electrons in an atom

Question 29

Isotopes

Answer 29

Atoms with the same number of protons but different numbers of neutrons

Question 30

Periodic table

Answer 30

the modern periodic table groups elements to show patterns in their properties.

Question 31

Groups

Answer 31

vertical columns of elements

Question 32

Periods

Answer 32

horizontal rows of elements across the periodic table Malleable: can be hammered into various shapes without cracking Ductile:metals can be drawn out to form a wire Conductor: alloys energy to flow through them e.g. copper Alloy: A mixture of metals e.g. copper and tin makes bronze.