Atoms, Mixtures and Pure Substances

The center of an atom

• Neutron

• Nucleus

The negatively charged particle found orbiting the nucleus.

• Electron

• Proton

The charge of the nucleus (protons and neutrons)

• Neutral

• Positive

The charge of the neutron.

• Neutral

• Negative

The atomic number in an element block tells the number of this particle...

• neutron

• proton

The mass number in an element block tells the total of these two particles...

• electron and neutron

• neutron and proton

A mixture that appears the same throughout (uniform.)

• Homogeneous

• Heterogeneous

A solution is a specific type of this mixture.

• Homogeneous

• Heterogeneous

The ink in the lab was considered to be this type of mixture.

• Homogeneous

• Heterogeneous

The part of a solution that is in the greatest amount and DOES the dissolving.

• solute

• solvent