Atoms 2 (Brett)

Question 1

Are all metals as reactive as others?

Answer 1

No

Question 2

Effects of a metal being more reactive

Answer 2

Higher tendency to become another compound with another substance

Question 3

Metal + Acid –>

Answer 3

Salt + Hydrogen

Question 4

Proof tests for hydrogen

Answer 4

Squeaky pop test (light a match in hydrogen to make it combust, and hence you hear a squeaky pop

Question 5

Salt combination

Answer 5

Metal + Non-Metal

Question 6

Reactivity Series (names)

Answer 6

1.Potassium
2.Sodium
3.Calcium
4.Magnesium
5.Aluminum
6.Carbon
7.Zinc
8.Iron
9.Tin
10.Lead
11.Hydrogen
12.Copper
13.Silver
14.Gold
15.Platinum

Question 7

Reactivity series (symbols)

Answer 7

1.K
2.Na
3.Ca
4.Mg
5.Al
6.C
7.Zn
8.Fe
9.Sn
10.Pb
11.H
12.Cu
13.Ag
14.Au
15.Pt

Question 8

relationship with electron shielding and electrons

Answer 8

The more shielding, the more reactive and easier it is to lose electrons since they have less traction with the nucleus

Question 9

Displacement Reactions

Answer 9

Occurs when one element replaces the other in a compound, the more reactive substance replaces the less reactive one

Question 10

What do chemicals need to react together

Answer 10

Kinetic energy

Question 11

Methods of increasing likelihood of reactions

Answer 11

1.Increase concentration
2.Increase temperature
3.Increase surface area
4.catalyst

Question 12

How increasing concentration helps

Answer 12

More particles to react and collide together

Question 13

How increasing temperature helps

Answer 13

Particles become more energized and move faster, hence meaning more collisions

Question 14

How increasing surface area helps

Answer 14

More of the substance is exposed with the other substance, hence more particles and more collisions

Question 15

How catalysts help

Answer 15

They lower the activation energy needed for a reaction to happen

Question 16

RoR

Answer 16

Rate of Reaction

Question 17

How to analyze a rate of reaction graph

Answer 17

The steeper the line, the faster the rate of reaction

Question 18

Endothermic reaction

Answer 18

when the energy of products is more than the energy of reactants, so energy is absorbed hence making it cold

Question 19

Exothermic reaction

Answer 19

When the energy of the products is less than the energy of the reactants, so energy is released making it hot

Question 20

Activation energy

Answer 20

The amount of energy needed for the reaction to begin

Question 21

Energy absorbed

Answer 21

The amount of energy the reactants absorb when forming new products

Question 22

Energy released

Answer 22

The amount of energy the reactants release when forming new products

Question 23

iron extraction method

Answer 23

1.Rocks of iron ore are found
2.These contain iron oxide
3.These are placed in a fire and heated up
4.Wood of charcoal is added so that carbon is present
5.Carbon displaces iron from iron oxide
6.Carbon dioxide and iron are formed
7.The pure iron can now be used

Question 24

Electrolysis

Answer 24

a process that extracts metals in their pure state by melting them down to a liquid state and the running electricity through them

Question 25

Elements that are extracted using electrolysis

Answer 25

Potassium (K), Sodium (Na), Calcium (Ca), Magnesium (Mg), Aluminum (Al)

Question 26

Elements that are extracted from their ores with a displacement reaction

Answer 26

Zinc (Zn), Iron (Fe), Lead (Pb), Platinum (Pt)

Question 27

Bauxite

Answer 27

aluminum oxide

Question 28

Hematite

Answer 28

Iron oxide

Question 29

Malachite

Answer 29

Copper carbonate

Question 30

Copper & Carbon method

Answer 30

1.Put 1 spatula of copper oxide powder in the crucible. Add one spatula of charcoal powder and mix the two together
2.Sprinkle 1 spatula of charcoal powder over the mixture. Put the lid on the crucible
3.Put the crucible, a pipe - clay triangle on a tripod. Put the Bunsen burner under the crucible
4.Heat the crucible strongly for 5 minutes
5.Turn off the Bunsen and wait. don’t remove the lid until the crucible has cooled down