Semester Exam 2024

Front

What does the symbol ∆ mean when seen in a chemical equation?

Back

The reactants were heated.

Front

What particles are located in the nucleus of an atom?

Back

Protons and neutrons.

Front

Identify the type of reaction: 3Mg + N2 --> Mg3N2

Back

Synthesis.

Front

What is the formula for iron (III) chloride?

Back

FeCl3.

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is a reactant?

Back

A substance that takes part in and undergoes change during a reaction.

Front

What is a product in a chemical reaction?

Back

The substances that are formed as a result of a chemical reaction.

Front

What is a precipitate?

Back

A solid that forms and settles out of a liquid mixture.

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.