Atomic structure

Question 1

Where do electrons live?

Answer 1

Shells

Question 2

The smallest part of an element:

Answer 2

Atom

Question 3

Mass number =

Answer 3

Number of protons + neutrons

Question 4

Observations of lithium and water:

Answer 4

Fizzes across the surface, gives off a gas, lithium disappears, heat is given off

Question 5

Observations of sodium and water:

Answer 5

Fizzes across the surface, melts into a little ball, gas and heat are given off

Question 6

Observations of potassium and water:

Answer 6

Fizzes across the surface, burns with lilac flame, potassium gets smaller then disappears, gas produced and heat is given off

Question 7

Observations of flourine:

Answer 7

Pale yellow gas

Question 8

Observation of chlorine:

Answer 8

Yellow/green gas

Question 9

Observation of bromine:

Answer 9

Red/brown liquid

Question 10

Observation of iodine:

Answer 10

Dark grey solid that turns purple vapour when heated

Question 11

Word equation for potassium and water:

Answer 11

Potassium + water -> Potassium hydroxide + hydrogen

Question 12

Atomic number =

Answer 12

Number of protons & number of electrons

Question 13

What does the periodic table display?

Answer 13

All the elements

Question 14

What is at the centre of an atom?

Answer 14

Nucleus

Question 15

What does the nucleus contain inside it?

Answer 15

Protons and neutrons

Question 16

4 properties of metals:

Answer 16

Ulster, electrical conductor, ductile, malleable