Unit 1 - Atomic theory

Question 1

name group 1 of the periodic table

Answer 1

alkali metals

Question 2

name group 7 of the periodic table

Answer 2

halogens

Question 3

name group 0 of the periodic table

Answer 3

noble gases

Question 4

what happens as you go down group 1 of the periodic table

Answer 4

[alkali metals] get more reactive as you go down the group

Question 5

state the properties of group 1 of the periodic table

Answer 5

alkali metals react rapidly with water, producing an alkaline solution. They are very reactive as they only have 1 outer electron

Question 6

state the properties of group 7 of the periodic table and what happens as you go down the group

Answer 6

halogens are diatomic. some are liquids and some are gases. as you go down the group, halogens become less reactive

Question 7

state the properties of group 0 of the periodic table

Answer 7

noble gases are very unreactive. they are monatomic (exist as individual atoms)

Question 8

what is a compound

Answer 8

atoms of different elements joined by chemical bonds to form a new substance. can only be separated by chemical reaction

Question 9

if a compound’s name ends in ‘-ide’, the compound contains _____?

Answer 9

if a compound’s name ends in ‘-ide’, the compound contains 2 elements

Question 10

if a compound’s name ends in ‘-ate’ or ‘-ite’, the compound contains _____?

Answer 10

three or more elements, one of which is oxygen

Question 11

what is a mixture

Answer 11

when two or some substances are mixed but not chemically joined and no new substance is formed. mixtures can be separated by processes such as evaporation, filtration + distillation

Question 12

what is a solvent

Answer 12

a solvent is a liquid a solute dissolves in

Question 13

what is a solute

Answer 13

a solute is a solid which dissolves in a solvent (liquid)

Question 14

what is a solution

Answer 14

formed when a solute dissolves in a solvent