Chemistry Review

Front

What is described as the basic unit of matter? Options: Element, Atom, Molecule, Compound

Back

Atom

Front

In the atom diagram shown, E is pointing to

Back

An electron

Front

In the atom diagram shown, A is pointing to the darker particles, these are known as: electrons, protons, neutrons, the nucleus

Back

protons

Front

B and C are found in the ______ of an atom.

Back

Nucleus

Front

What charge does an electron have?

Back

Negative

Front

What is found in the nucleus of an atom? Options: electrons, neutrons, The center of an atom, composed of protons and neutrons, molecules

Back

The center of an atom, composed of protons and neutrons

Front

In this chemical equation, the elements in red are the_______?

Back

Reactants

Front

What is the atomic mass of this atom? Options: 1, 3, 4, 7

Back

7

Front

What is the atomic number of this atom? Options: 4, 5, 9, none of the above

Back

4

Front

Valence electron

Back

an electron that is found in the outermost orbital of an atom.