Matter, Atoms, Molecules, and Compounds

Front

What are the building blocks of all matter?

Back

Atoms are the building blocks of all matter.

Front

The smallest unit of an element is a(n) ______________________.

Back

Atom.

Front

An ordinary atom has an equal number of protons and electrons. True or False?

Back

True.

Front

Where is most of the mass of the atom located?

Back

In the nucleus.

Front

The law of Conservation of ___________ states that ______ cannot be created nor destroyed, but can be changed.

Back

mass, matter.

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 together.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Front

What is the nucleus of an atom?

Back

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