Exam Revision

Question 1

What charge does protons have

Answer 1

Positive

Question 2

What charge does neutrons have

Answer 2

Neutral

Question 3

What charge does electrons have

Answer 3

Negative

Question 4

Atomic Number

Answer 4

Number of protons (and electrons)

Question 5

Atomic Mass

Answer 5

Number of protons and neutrons

Question 6

Groups

Answer 6

Columns (number of valence electrons)

Question 7

Periods

Answer 7

Rows (number of electron shells)

Question 8

What is Ionic Bonding

Answer 8

Transferring of electrons between metals and non-metals

Question 9

What is Covalent Bonding

Answer 9

Sharing of electrons between non-metals

Question 10

What is metallic bonding

Answer 10

Sea of delocalised electrons around positive ions

Question 11

Combustion reactions

Answer 11

usually use fuel and release energy as a by product

Question 12

Precipitation reactions

Answer 12

Two aqueous solutions form a solid product (precipitate)

Question 13

acid-base neutralisation

Answer 13

including acid

Question 14

Concentration (collision theory)

Answer 14

Increasing the concentration fits more atoms and molecules into the same space, If more molecules are present, they are more likely to collide

Question 15

Surface Area

Answer 15

By putting pressure on atoms and molecules they are forced into a smaller space. With less room to move, the atoms and molecules are more likely to collide

Question 16

Temperature

Answer 16

Increasing the temperature gives atoms and molecules more energy. More energetic atoms will move faster and therefore more likely to collide