Elements, Ions and Compounds

What are all substances made from?

Atoms of elements.

What are molecules composed of?

Two or more atoms.

What type of molecule is formed if the atoms are the same?

An element.

What type of molecule is formed if the atoms are different?

A compound.

How are positively charged ions formed?

By losing one or more electrons.

How are negatively charged ions formed?

By gaining one or more electrons.

What do compounds consist of?

Atoms of two or more elements.

What are ionic compounds made of?

Both metals and non-metals.

What are molecular compounds made of? (simple)

Only non-metals.

What are the properties of non-polar compounds?

They do not dissolve in water but will dissolve in lipids.

What accounts for 99% of the mass of the human body?

The six most common elements.

Oxygen, Carbon, Hydrogen, Nitrogen, Calcium, Phosphorus (Phosphate)

What type of ions are most key elements found as?

Inorganic ions.