GMAS Science Challenge Properties of Matter

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the mass of an atom and stabilize the nucleus by offsetting the repulsive forces between protons.

Front

Distinguish between chemical and physical properties.

Back

Chemical properties involve the ability of a substance to undergo a chemical change, while physical properties involve characteristics like color, density, and melting point.

Front

What is a chemical reaction?

Back

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

Front

What is the primary role of protons in an atom?

Back

Protons determine the chemical identity of an atom, defining its element.

Front

What is the primary function of valence electrons in chemical reactions?

Back

Valence electrons are involved in forming chemical bonds between atoms.

Front

What are atoms?

Back

Atoms are the basic units of matter, consisting of protons, neutrons, and electrons.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only 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

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What are physical changes?

Back

Physical changes are changes that affect one or more physical properties of a substance without altering its chemical composition.

Front

What are chemical changes?

Back

Chemical changes are changes that result in the formation of new chemical substances.