2024 Christmas Mock

Question 1

Word equation for the reaction of magnesium with oxygen is what?

Answer 1

Magnesium + oxygen -> magnesium oxide

Question 2

Solvent mixes completely with a solvent to make a solution is what?

Answer 2

Dissolve

Question 3

Sum of the atomic masses in a compound is?

Answer 3

Relative mass

Question 4

When metal forms a metal oxide why does the mass increase?

Answer 4

Oxygen atoms have been added

Question 5

What is avogrados constant?

Answer 5

1 Mole= 6.02x10 to the power of 23

Question 6

What calculation is used to calculate mole?

Answer 6

Mole = mass(g)/mr (periodic table)

Question 7

What is dilute?

Answer 7

A solution that has a small amount of solute in a large amount of solvent.

Question 8

What is concentrated?

Answer 8

A solution that has a large amount of solute in a small amount of solvent.

Question 9

What equations are used for Calculating concentration?

Answer 9

Conc= mass of solute (g)/ volume of solvent (dm3)

Conc= mass of solute (mol)/ volume
of solvent (dm3)

Question 10

Acid that makes a chloride salt is?

Answer 10

Hydrochloric acid

Question 11

A reaction that involves an acid in a neutral solution is?

Answer 11

Neutralisation

Question 12

The bonding that has an electrostatic force of attraction between oppositely charged ions is?

Answer 12

Ionic bonding

Question 13

What happens in ionic bonds?

Answer 13

Electrons are transferred

Question 14

What colours are acids, neutral and alkali?

Answer 14

Red= acid
Green= neutral
Purple= alkali

Question 15

What does metal + acid equal?

Answer 15

Salt + hydrogen gas

Question 16

A compound formed when some or all of the hydrogen from an acid is replaced by a metal is known as?

Answer 16

Salt.