Pure Substances and Mixtures

Front

What is the smallest unit of an element that maintains the properties of that element?

Back

Atoms

Front

What does the atomic number represent in an element's block on the periodic table?

Back

The number of protons in the nucleus of an atom.

Front

What is a positively charged particle found in an atom?

Back

Proton

Front

What is a compound? Give an example.

Back

A substance formed when two or more elements are chemically bonded together. Example: Carbon Dioxide (CO2).

Front

What does the symbol 'K' represent in the periodic table?

Back

The symbol for the element Potassium.

Front

What is a pure substance?

Back

A material made up of only one type of particle, having a uniform and definite composition.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded and can be separated by physical means.

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 atomic weight of an element?

Back

The average mass of an atom of an element, measured in atomic mass units (amu).

Front

What is a neutron?

Back

A particle found in the nucleus of an atom that has no charge.