Chemistry Midterm Review

Front

What is the chemical formula for carbon tetrachloride?

Back

CCl₄

Front

What are electrons?

Back

Subatomic particles with a negative charge that orbit the nucleus of an atom.

Front

What does the kinetic molecular theory state about gases?

Back

Gases consist of particles that are in constant random motion and have empty space between them.

Front

What happens to the temperature of a material as its average kinetic energy increases?

Back

The temperature increases.

Front

What is the chemical formula for ammonia?

Back

NH₃

Front

Define a covalent compound.

Back

A chemical compound formed by the sharing of electrons between atoms.

Front

What is the significance of valence electrons?

Back

Valence electrons are the outermost electrons of an atom and are involved in forming bonds.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.