Pure Substances vs Mixtures

True or False: Each part of a mixture keeps its properties when mixed.

• True

• False

[check all that apply] Pure substances include:

• Elements

• Homogeneous Mixtures

• Compounds

• Heterogeneous Mixtures

Salt (NaCl) is

• Mixture

• Compound

Heterogeneous mixture is

• A mixture with a composition that varies from point to point

• A mixture with a uniform composition and appears visually the same throughout

Homogeneous mixture is

• A mixture with a composition that varies from point to point

• A mixture with a uniform composition and appears visually the same throughout

Anything that takes up space and has mass is called?

• Matter
• Energy
• Solutions
• Atoms

Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –

• a gas at room temperature.
• made of two different elements.
• given off by green plants.