Step-by-step explanation:
An atom contains three sub-atomic particles as protons, neutrons and electrons.
Protons are positively charged, neutrons have no charge and electrons are negatively charged.
An element is a substance that contains same type of atoms. For example, Na is an element.
A solution is a mixture of two or more substances mixed together in uniform composition. Hence, it is also known as a homogeneous solution.
A compound is a substance that contains two or more different atoms chemically combined together in similar composition.
A colloid is a substance in which particles are present in a microscopically dispersed phase throughout a dispersion medium. Physical distinction can be done between the dispersed phase and dispersion medium. Therefore, a colloid is a heterogeneous mixture.
Hence, we match each vocabulary term to its definition as follows.
1. electrons - negatively charged, subatomic particles.
2. element - a substance with only one type of atom.
3. solution - a homogeneous mixture.
4. compound - two or more elements that have been chemically combined.
5. protons - positively charged, subatomic particles.
6. colloid - a heterogeneous mixture.