1st Sem Physical Science Review

Front

How many valence (outer) electrons does an Oxygen atom have?

Back

6

Front

Name the compound KF.

Back

Potassium fluoride

Front

What two types of atoms make a covalent bond?

Back

2 non-metals

Front

Electrons are __________________________ than a proton.

Back

smaller and with an opposite charge

Front

When an atom has a positive or negative charge they are called...

Back

Ions

Front

What is the atomic number of Oxygen?

Back

8

Front

Define a covalent bond.

Back

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of an electron?

Back

Negative

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.