Atoms Compounds Isotopes

Question 1

Mass of proton

Answer 1

1

Question 2

Mass of electron

Answer 2

0 neglible

Question 3

Mass of neutron

Answer 3

1

Question 4

Charge of proton

Answer 4

+1 POSITIVE

Question 5

Charge of electron

Answer 5

-1 NEGATIVE

Question 6

Charge of neutron

Answer 6

0

Question 7

Compound

Answer 7

Atom of two or more elements are chemically bonded together

Question 8

What is an isotope

Answer 8

Atoms of the same element but with a different number of neutrons so different mass number

Question 9

Give two examples of isotopes

Answer 9

12. 14. 35. 37. C. C. Cl. Cl.
13. 6. 17. 17.

Question 10

What is ionic bonding

Answer 10

When atoms lose or gain electrons to form charged particles called ions - strongly attracted to each other due to forces of opposite attraction

Question 11

What does the group number show

Answer 11

How many electrons in outer shell

Question 12

Are ionic compounds electrical conductors

Answer 12

No only when melted or dissolved in water as ions separate and are free to move causing an electrical current

Question 13

Describe structure of ionic compounds

Answer 13

• Giant ionic lattice
• Closely packed and regular
• Strong electrostatic forces of attraction - oppositely charged ions

Question 14

Properties of ionic compounds

Answer 14

High bpt as strong forces

Only conduct electricity when melted or dissolved in water

Question 15

What forms an ionic compound

Answer 15

NON METAL + METAL

Question 16

What happens to metals during ionic bonding

Answer 16

LOSE TO BE POSITIVE

Question 17

What happens to non metals during ionic bonding

Answer 17

GAIN TO BE NEGATIVE

Question 18

What is covalent bonding

Answer 18

SHARED PAIR OF ELECTRONS TO GAIN FOS

Question 19

What elements occur in covalent bonding

Answer 19

NON METAL + NON METAL

Question 20

Symbol for ammonia

Answer 20

NH3

Question 21

SYMBOL FOR HYDROGEN CHLORIDE

Answer 21

HCl