Chemistry Revision Year 9

Front

When an atom loses an electron, it becomes a: positive ion, negative ion, neutral ion, neutral atom

Back

positive ion

Front

An electron has what kind of charge?

Back

negative

Front

Where are valence electrons found?

Back

In the outermost energy levels of an atom.

Front

Cations

Back

Lose electrons, has an overall positive charge

Front

Anions

Back

Gain electrons, has an overall negative charge

Front

How does calcium become a calcium ion?

Back

it loses 2 electrons

Front

Atoms can share electrons.

Back

True

Front

In ionic bonds, electrons are

Back

Gained or lost

Front

Positive ions

Back

Lose electrons

Front

Negative ions

Back

Gain electrons