Atomic structure

Question 1

all substances are made of what

Answer 1

atoms

Question 2

elements are shown where

Answer 2

the periodic table

Question 3

what was the plum pudding model

Answer 3

suggested that the atom was a ball of positive charge with negative electrons embedded in it

Question 4

what is the relative charge of a proton, neutron and electron

Answer 4

proton = +1
neutron = 0
electron = -1

Question 5

the number of electrons is equal to the number of ? in the nucleus

Answer 5

protons

Question 6

what is the relative mass of proton, neutron and electron

Answer 6

proton = 1
neutron = 1
electron = very small

Question 7

what is a mass number

Answer 7

sum of protons and neutrons in an atom

Question 8

what is a mixture

Answer 8

A mixture is made from different substances that are not chemically joined

Question 9

what do you call it when a gas turns into a liquid and a liquid turns into a gas

Answer 9

gas to liquid = condensing

liquid to gas = evaporation, boiling

Question 10

what do you call it when a liquid turns into a solid and solid into liquid

Answer 10

liquid into solid = freezing

solid into liquid = melting

Question 11

what do you call it when a solid turns into a gas and a gas into a solid

Answer 11

solid into gas = sublimation

gas into solid = sublimation

Question 12

what is gas pressure

Answer 12

when particles colliding against the side and bouncing off

Question 13

Define an isotope

Answer 13

Atoms of the same element with different numbers of neutrons

Question 14

Sharing electrons is which type of bonding

Answer 14

Covalent

Question 15

Transferring electrons is which type of bonding

Answer 15

Ionic bonding

Question 16

In chemical reactions what happens when atoms of two or more react chemically

Answer 16

They make a compound