C1 Atomic Structure

Question 1

What is the atom Na?

Answer 1

Sodium

Question 2

What type of substances are shown in the periodic table?

Answer 2

Elements

Question 3

Which sub-atomic surrounds and orbits the nucleus?

Answer 3

Electrons

Question 4

What is it called when atoms combine with other atoms ?

Answer 4

A Compound

Question 5

What type of substance is a sodium chloride, NaCl?

Answer 5

A Compound

Question 6

In chemical equations what is the substance you start with called?

Answer 6

Reactants

Question 7

In chemical equations what is the new substance made called?

Answer 7

A Product

Question 8

Write a word equation for the reaction between hydrogen and oxygen to produce water.

Answer 8

Hydrogen + Oxygen ——-> Water

Question 9

What are the state symbols for solids, liquid and gas?

Answer 9

(s) for solids, (l) for liquids and (g) for gases.

Question 10

Balance the equation.

h2 +br2 ———-> HBr

Answer 10

2HBr

Question 11

H2 is a gas. Which state symbol would you use to show a gas?

Answer 11

(g)

Question 12

Which law states that the mass of the products formed in a reaction is equal to the mass of the reactants?

Answer 12

Law Of Conservation Of Mass

Question 13

What is a mixture?

Answer 13

A mixture is made up of two or more substances (elements or compounds) that are not chemically combined together.

Question 14

Name 3 ways to separate mixtures. (3)

Answer 14

1. Filtration
2. Crystallisation
3. Distillation

Question 15

Which method would you use to separate sand from a mixture of sand and water?

Answer 15

Filtration

Question 16

In Fractional Distillation, which liquid is collected first?

Answer 16

The liquid with the lowest boiling point.