Semester 1 test reg chemistry 2024-2025

Front

What is the correct name for the compound Mg(OH)₂?

Back

Magnesium Hydroxide

Front

What type of bond is characterized by the sharing of electron pairs between atoms?

Back

Covalent bonds

Front

What type of bond involves the transfer of electrons from one atom to another?

Back

Ionic bonds

Front

What are the subatomic particles with a negative charge?

Back

Electrons

Front

What is the formula for lead (II) sulfide?

Back

PbS

Front

What is the correct number of significant figures in the sum of 225.177 + 35.16?

Back

260.34

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of a neutron?

Back

Neutral

Front

What is the charge of an electron?

Back

Negative

Front

What is the principle of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.