Predicting & Identifying Reactions & Products

Question 1

what are group 1 metals called

Answer 1

alkali metals

Question 2

what do group 1 metals form when they react with water

Answer 2

alkaline solutions

Question 3

what are some properties of group 1 metals

Answer 3

soft metals which can easily be cut
low density and low melting point
very reactive

Question 4

how many electrons do alkali metals have on their outermost shell

Answer 4

one, they only need to lose one electron to become highly stable

Question 5

what happens to the melting point of group 1 metals as you move down the group

Answer 5

it decreases

Question 6

what happens to the reactivity of group 1 metals as you move down the group?

Answer 6

it increases

Question 7

what happens when a group 1 element reacts

Answer 7

it forms 1+ ions

Question 8

describe the change of the number of shells of electrons in group 1 metals

Answer 8

it increases by 1 so the outermost electron gets further away from the nucleus, forces of attraction become weaker between the outermost electron and the nucleus so less energy is required and the outer electron is lost more easily

Question 9

what are alkali metals stored in

Answer 9

oil

Question 10

explain the reaction of potassium with water

Answer 10

violent, lilac coloured flame, melts into a shiny ball

Question 11

what happens when alkali metals react with oxygen in the air

Answer 11

becomes metal oxides and tarnish, produced in dull coating

Question 12

what do group 1 metals form when reacted with chlorine

Answer 12

salts called metal chlorides

Question 13

what are group 7 elements known as

Answer 13

halogens

Question 14

what do halogens form during a reaction

Answer 14

-1 ions called halide ions

Question 15

explain the characteristics of fluorine

Answer 15

yellow gas that is very reactive and poisonous

Question 16

how many electrons do group 7 elements have on the outer shell

Answer 16

7

Question 17

what happens to the melting and boiling points of the halogens as you go down the group

Answer 17

it increases because of the increasing intermolecular forces as the atoms become larger, so more energy is required to overcome these forces

Question 18

what happens to the physical state of the halogens as you go down the group

Answer 18

fluorine and chlorine are gases, bromine is a liquid and iodine is crumbly solid

Question 19

what happens to the reactivity of group 7 non-metals as you go down the group and why

Answer 19

it decreases because the number of shells of electrons increases

Question 20

when do halogen displacement reactions occur?

Answer 20

when a more reactive halogen displaces a less reactive halogen

Question 21

give an example of an ionic equation tat shows what happens in a displacement reaction of halogens

Answer 21

Cl2 + 2Br- → 2Cl- + Br2

Question 22

what are the elements in group 0 called?

Answer 22

noble gases

Question 23

describe the characteristics of noble gases

Answer 23

they are non-metal, monatomic (exist as single atoms), colourless, non-flammable gases at room temperature

Question 24

how many electrons do group 0 elements have?

Answer 24

full outer shell, 8

Question 25

describe the physical properties of noble gases

Answer 25

very low melting & boiling points increase in boiling point as we move down the group due to an increase in the relative atomic mass increase in intermolecular forces density increases as you go down the group

Question 26

how low are the boiling points in noble gases

Answer 26

from -269-60

Question 27

what do metals that react with water form?

Answer 27

metal hydroxide and hydrogen gas

Question 28

when acids and metals react what is produced

Answer 28

salt and hydrogen gas

Question 29

what does carbon in the reactivity series do

Answer 29

remove oxygen from metal oxide ores

Question 30

how does the reactivity of metals change going down the reactivity series

Answer 30

it decreases

Question 31

when do displacement reactions occur?

Answer 31

when the solid metal is more reactive than the metal in the compound

Question 32

what is the reactivity series of metals in order

Answer 32

potassium, sodium, lithium, calcium, magnesium, aluminium, carbon, zinc, iron, hydrogen, copper, silver, gold

Question 33

what is a numonic to remember the reactivity series

Answer 33

Please send lions, cats, monkeys and cute zebras into hot countries signed Gordon

Question 34

compare transition metals and group 1 properties

Answer 34

transition metals are much harder, stronger, and denser with low reactivity whereas group 1 metals are soft and light with higher reactivity

Question 35

what is the test for carbon dioxide

Answer 35

bubbling the gas through an aqueous solution and the limewater turns milky or cloudy if its cd

Question 36

what is the test for hydrogen

Answer 36

holding a burning splint held at the open end of a test tube of gas, if it is hydrogen it makes a loud pop

Question 37

explain the test for oxygen

Answer 37

placing a glowing splint inside a test tube of gas, if the gas is oxygen it will relight

Question 38

explain the test for chlorine

Answer 38

use of litmus paper, damp blue litmus paper will be bleached white