atoms, molecules & compounds

Front

What part of an atom is negatively charged?

Back

Electrons are the negatively charged particles in an atom.

Front

Which part of an atom is positively charged?

Back

Protons are the positively charged particles in an atom.

Front

What is the term for combining 2 or more atoms together?

Back

Molecules are formed when 2 or more atoms combine.

Front

What is the tiniest particle in the entire universe?

Back

Atoms are the smallest units of matter.

Front

How many hydrogen atoms are there in a water molecule?

Back

There are 2 hydrogen atoms in a water molecule (H2O).

Front

What are the three main parts of an atom?

Back

The three main parts of an atom are protons, neutrons, and electrons.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded.

Front

What is the charge of neutrons?

Back

Neutrons have no charge; they are neutral particles.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.