Chemistry review

Front

What is the balanced equation for the reaction of NaH and BF₃ to produce B₂H₆ and NaF?

Back

6 NaH + 2 BF₃ → 1 B₂H₆ + 6 NaF

Front

What type of charge does an electron have?

Back

Negative

Front

Is density a physical or chemical property?

Back

Physical

Front

What family in the periodic table is the most reactive?

Back

Alkali Metals (Group 1)

Front

What type of charge does a proton have?

Back

Positive

Front

What is the definition of 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.

Front

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

Back

An ionic bond is formed through the transfer of electrons from one atom to another, while a covalent bond is formed by the sharing of electrons between atoms.

Front

What is the formula for calculating density?

Back

Density = Mass/Volume

Front

What are the three states of matter?

Back

Solid, Liquid, Gas

Front

What is the pH scale used for?

Back

The pH scale measures the acidity or basicity of a solution.