C2 Part 1

Question 1

what is the mass number on an element?

Answer 1

the mass number also called atomic mass number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleu

Question 2

what is the atomic number?

Answer 2

the number of protons in the nucleus of an atom, which is characteristic of a chemical element and determines its place in the periodic table

Question 3

what is a compound?

Answer 3

two+ elements joined together

Question 4

what is covalent bonding?

Answer 4

where two elements join together, a pair of shared electrons

Question 5

what are the first 5 alkanes?

Answer 5

methane
ethane
propane
butane
pentane

Question 6

what does a displayed formula show?

Answer 6

the types of bonds in a simple form

Question 7

give two examples of elements with a giant covalent structure:

Answer 7

diamond and silicone

Question 8

what is the displayed formula of

N3

Answer 8

H
               |
              N
           /      \
        H        H

Question 9

what is a delocalised electron?

Answer 9

when the electron has space to move about

Question 10

why can’t electrons move from one particle top the other?

Answer 10

because simple molecular don’t conduct electricity

Question 11

how do ionic compounds for crys

Answer 11

tuhj