IGCSE Chemistry Revision

Front

What does the nucleus consist of?

Back

Protons and Neutrons.

Front

What do isotopes of carbon have in common?

Back

They have the same atomic number.

Front

Which metal is the least reactive: copper, magnesium, zinc, or iron?

Back

Copper.

Front

What does simple evaporation separate?

Back

A soluble solid from a liquid.

Front

What percentage of our atmosphere is made up of other gases like argon, water vapor, and carbon dioxide?

Back

1%.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number?

Back

The total number of protons and neutrons in an atom's nucleus.