matter

Question 1

matter

Answer 1

anything that occupies space and has mass

Question 2

pure substance

Answer 2

consist of one type of substance only and are made up either of elements or compounds

Question 3

element

Answer 3

a substance which cannot be broken down further into simpler substances

Question 4

compound

Answer 4

formed when 2 or more elements combine chemically with each other in a fixed ratio

Question 5

alloy

Answer 5

mixture of metals

Question 6

semi-metals/metalloids

Answer 6

elements not classified as metal/non-metal
display properties of both

Question 7

heterogeneous mixtures

Answer 7

a mixture in which the composition of the mixture is not uniform

Question 8

homogenous mixtures

Answer 8

a mixture in which the composition of the mixture is the same throughout and consists of 2 or more substances in the same phase

Question 9

molecule

Answer 9

a group of covalently bonded atoms

Question 10

ion

Answer 10

a charged atom

Question 11

cation

Answer 11

a positively charged ion

Question 12

anion

Answer 12

a negatively charged ion

Question 13

atomic number

Answer 13

the number of protons in an atom

Question 14

mass number

Answer 14

number of protons plus neutrons in an atom

Question 15

isotope

Answer 15

atoms of the same element which have different mass numbers

Question 16

mixture

Answer 16

a combination of 2 more substances in which the substances retain their own properties

Question 17

suspension

Answer 17

any combination of substances that do not dissolve in one another results in a heterogeneous mixture

Question 18

miscible

Answer 18

liquids that mix completely with each other

Question 19

solution

Answer 19

homogeneous mixture of solute and solvent

Question 20

solvent

Answer 20

the substance in which another substance is dissolved , forming a solution

Question 21

solute

Answer 21

the substance that is dissolved in the solution

Question 22

neutrons

Answer 22

atomic mass - atomic number

Question 23

name 3 strongly magnetic elements

Answer 23

iron
cobalt
nickel

Question 24

check for purity of a substance

Answer 24

using boiling + melting points
chromatography