Atomic Structure

Question 1

Mass Number

Answer 1

Number of protons and neutrons

Question 2

Atomic Number

Answer 2

Number of protons

Question 3

If a neutral atom gains electrons…

Answer 3

It becomes a negatively charged ion

Question 4

If a neutral atom loses electrons…

Answer 4

It becomes a positively charged ion

Question 5

Neutral Atom has…

Answer 5

Same number of protons as electrons

Question 6

Mass of Proton

Answer 6

1

Question 7

Mass of Electron

Answer 7

1

Question 8

Mass of Electron

Answer 8

Approx. 0

Question 9

Charge of Proton

Answer 9

+1

Question 10

Charge of Neutron

Answer 10

0

Question 11

Charge of Electron

Answer 11

-1

Question 12

Group

Answer 12

vertical column of elements

Question 13

Period

Answer 13

horizontal rows of elements

Question 14

Isotopes

Answer 14

atoms of same substance with same protons and neutrons but different electrons

Question 15

Compound

Answer 15

two or more atoms chemically bonded together in fixed proportions

Question 16

Element

Answer 16

A substance made up of just one type of atom

Question 17

How are electron sheels arranged?

Answer 17

2,8,8

Question 18

Name 3 differences between metals and non-metals

Answer 18

Metals are malleable, very conductive, strong and have high boiling points, whereas non-metals are the opposite

Question 19

How do you calculate relative atomic mass?

Answer 19

Relative atomic mass is calculated by adding up the masses of all the isotopes of an element and then averaging them based on their relative abundance in nature.

Question 20

Elements in periodic table

Answer 20

119

Question 21

Name the diatomic elements

Answer 21

Hydrogen, Oxygen, Fluorine, Iodine, Chlorine and Bromine

Question 22

Ionic compounds are generally formed between…

Answer 22

non-metals and metals

Question 23

Ionic Bonding

Answer 23

Ionic bonding is the complete transfer of valence electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged ion, whereas the nonmetal accepts those electrons to become a negatively charged ion.

Question 24

Covalent Bonding

Answer 24

A covalent bond forms when two non-metal atoms share a pair of electrons . The electrons involved are in the outer shells of the atoms. An atom that shares one or more of its electrons will complete its outer shell. Covalent bonds are strong – a lot of energy is needed to break them.

Question 25

Position of metals ands non-metals in periodic table

Answer 25

The metals are to the left of the line (except for hydrogen, which is a nonmetal), the nonmetals are to the right of the line

Question 26

Why do elements in the same group of the periodic table have similiar properties?

Answer 26

Same number of electrons in outer shell

Question 27

Why are elements in group 1 unreactive?

Answer 27

Stable electron structures so don’t lose or gain electrons

Question 28

What do elements of the same group have in common?

Answer 28

Same charge and same number of electrons in outer shell