Atoms , Elements ,compounds And Mixtures

Question 1

What are all substances made out of and what happens to them ?

Answer 1

Alll substances are made of atoms that cannot be chemically broken down it is the smallest part of an element

Question 2

How many types of atoms make up an element?

Answer 2

One type

Question 3

How many elements (roughly) are in the periodic table

Answer 3

100 element

Question 4

What is an compound?

Answer 4

Two or more elements that are chemically boned in fixed properties

Question 5

When naming a compound (which is usually a metal -non metal ) what happens to the metal name and non metal name .

Answer 5

When your naming a compound the metal name doesn’t change but the non metal name ends in ide

Question 6

When naming compound (with a non metal and a metal ) when oxygen is present

Answer 6

When oxygen is present the metal name does not change but the non metal name ends in ate

Question 7

Why do we using state symbols

Answer 7

We use state symbols to show whether reactants or products in chemical reactions are solid liquid gas or dissolved in water (aqueous)

Question 8

What is the following symbol (in state symbols)

S

Answer 8

Solid

Question 9

What does the following symbol (in state Symbol ) mean

L

Answer 9

Liquid

Question 10

What does the following symbol (in state symbol) mean

G

Answer 10

Gas’s

Question 11

What does the following symbol mean (in state symbols)

Aq

Answer 11

Aqueous (dissolved in water )

Question 12

What does solvent mean

Answer 12

The liquid in which a solute dissolves

Question 13

What does solute mean

Answer 13

The substances that dissolve in a liquid to form a solution

Question 14

What does solution mean

Answer 14

Is the mixture formed when a solute has dissolved in a solvent

Question 15

What does insoluble mean

Answer 15

Describes w substance that will not dissolve

Question 16

How can mixtures be separated

Answer 16

By physical process such as filtration, crystallisation , simple distillation, fractional distillation , chromatography

Question 17

What is filtration ?

Answer 17

The technique that separates substances that are insoluble in a solvent from those that are solute

Question 18

What is crystallisation?(Definition)

Answer 18

Crystallisation is the technique that separates soluble solids from solutions (salt crystal and water) by evaporation

Question 19

What is simple distillation?

Answer 19

Simple distillation is the technique used to separate out solutions (Saltwater to pure water)By using a condenser

Question 20

What is fractional distillation?

Answer 20

Fractional distillation is used to separate a mixture of liquids (Ethanol And water) by using a condenser the process is boiling the two substances At their required boiling points

Question 21

What is chromatography?

Answer 21

Chromatography is the technique used to separate Dye of ink by seeing how soluble each colour is