F4 Chmemistry exam revision_T2_Fill in the blanks

Front

Mainly found in compounds made up of metals and non-metals

Back

Ionic bonds

Front

Atoms of elements may become more stable by gaining or losing _________________.

Back

electrons

Front

The carbon dioxide molecules are held together by ________________________ and packed closely together in a regular pattern.

Back

intermolecular forces

Front

Silicon dioxide (SiO₂) (or Silicon (VI) oxide). Each oxygen atom bonds to how many silicon atoms?

Back

four

Front

Substances with simple molecular structure usually have a melting point.

Back

low

Front

Chemical equation must be _____________________ .

Back

balanced

Front

In a chemical equation, the chemicals written on the left-hand side of the arrow are the __________________________.

Back

reactants

Front

In a chemical equation, the number in front of the chemical is called

Back

coefficient

Front

The relative atomic mass of an element is the weighted average mass of the _________________________ of the element.

Back

isotopes

Front

The number of atoms in 12 g of carbon-12 is 6.02 x 10²³, which is known as the _________________________________.

Back

Avogadro constant