Chemistry Semester Assessment

Front

Inferences use ______________ to form opinions/explanations.

Back

evidence

Front

Which of the following are completely unreactive?

Back

Noble gases

Front

What is the correct name for KNO3?

Back

Potassium nitrate

Front

If an element has 3 valence electrons, what charge will likely form on its ion?

Back

+3

Front

What is the name of the compound Sc(OH)3?

Back

Scandium (III) hydroxide

Front

What are the three states of matter?

Back

Solid, liquid, gas

Front

What is the pH range of acids?

Back

pH less than 7

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is an ion?

Back

An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

Front

What is the difference between an ionic bond and a covalent bond?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.