Atoms, Elements And Compounds

Question 1

What is an element

Answer 1

• simple substance

- cannot be split up smaller through chemical reactions

Question 2

What is an atom

Answer 2

Made up of protons, neutrons and electrons

Question 3

Where are protons, neutrons and electrons found

Answer 3

• Protons and neutrons in the nucleus

- electrons on the outer shell

Question 4

Protons, neutrons and electrons relative charge and mass

Answer 4

Protons- RC +1 RM 1
Neutrons- RC 0 RM 1
Electrons- RC -1 RM 1/2000

Question 5

Molecules

Answer 5

A group of atoms covalently bonded

Question 6

What is a mixture

Answer 6

two or more elements or compounds not chemically bonded

Question 7

What is the Plum Pudding model

Answer 7

atom is a ball of positive and negative charge

Question 8

What is the nuclear model

Answer 8

dense positive centre a with negative charge randomly around it

Question 9

Niels Bohr work

Answer 9

Adapted the nuclear model to suggest the electrons orbit the centre

Question 10

What is an ion

Answer 10

• charged atom or group of atoms

- gaining or loosing an electron

Question 11

Group 1 metals

Answer 11

Lithium, sodium and potassium

Question 12

Group 1 name

Answer 12

Alkali metals

Question 13

Observations of group 1 metals

Answer 13

Easy to cut, shiny inside, fizz when in water