Atoms, Elements and Compounds

Pages 16-21

Sketch an atom. Label the nucleus and the electrons

Atom

What is the relative mass of a neutron

1

True or false? Elements only contain atoms with the same number of protons

True

What is the relative charge of a proton?

+1

Define relative atomic mass

An average mass taking into account the different masses and abundances of all the isotopes that make up the element

How similar are the properties of a compound to the elements that it’s made from

They are totally different from the properties of the original element

Give the formula for Carbon Dioxide

CO₂

Give the formula for Sodium Carbonate

Na₂CO₃

Give the formula for Hydrochloric Acid

HCl

Balance the equation: Mg + O₂ → MgO

2Mg + O₂ → 2MgO

Balance the equation: H₂SO₄ + NaOH → Na₂SO₄ + H₂O

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O