Properties and Classification of Matter

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a type of mixture where the components are not uniformly distributed, and different parts can be seen and separated. Example: soil.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout. Example: saltwater.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and properties throughout. It can be an element or a compound.

Front

What is the mass number of an atom?

Back

The mass number of an atom is the total number of protons and neutrons in its nucleus.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom. They determine the atomic number of an element.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom. They contribute to the mass of the atom but do not affect its charge.

Front

What are nonmetals?

Back

Nonmetals are elements that are typically poor conductors of heat and electricity and are not malleable or ductile. They are often found on the right side of the periodic table.

Front

What are metals?

Back

Metals are elements that are good conductors of heat and electricity, malleable, and ductile. They are typically found on the left side of the periodic table.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals. They are found along the zig-zag line on the periodic table.

Front

What is a reactant in a chemical equation?

Back

A reactant is a substance that undergoes a chemical change in a reaction, found on the left side of the equation.