MOD Chemical Formulas and Atomic Structure Test

Front

What is a molecule?

Back

A molecule is 2 or more atoms (same or different) joined together.

Front

In the formula for Hydrogen Peroxide (H₂O₂), how many Oxygen atoms are there?

Back

There are 2 Oxygen atoms.

Front

How many neutrons are in an atom if it has a mass number of 40 and 20 protons?

Back

There are 20 neutrons.

Front

How do you determine the mass number of an atom?

Back

Add protons and neutrons.

Front

What is the correct formula for three hydrogen (H), one sulfur (S), and four oxygen (O)?

Back

H₃SO₄

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are protons?

Back

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

Front

What are neutrons?

Back

Neutrons are neutral 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 atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.