G7 Chem intro

A pure substance in which all atoms are identical

• Element

• Mixture

• Compound

• Isotope

A substance made up of identical molecules containing 2 or more different types of atoms

• Element

• Mixture

• Compound

• Isotope

A substance containing different atoms, some of which are not connected to each other.

• Element

• Mixture

• Compound

• Isotope

Distilled water is an example of …

• An element

• A mixture

• A compound

Pure gold is an example of …

• An element

• A mixture

• A compound

Salt is an example of …

• An element

• A mixture

• A compound

Salad dressing and cookies are would be classified as …

• Elements

• Mixtures

• Compounds

Three gases found in air are OXYGEN, CARBON DIOXIDE & NITROGEN. How are these classified?

• Oxygen is a compound, the other 2 are elements

• Nitrogen is a compound, the other 2 are elements

• Carbon Dioxide is a compound, the other 2 are elements

Which is the best definition of “molecule”

• A single atom

• Separate atoms

• 2 or more atoms joined together