Chemistry Lesson 1 Revision

___________ are substances that cannot be broken down into any other substance.

• Elements

• Mixtures

• Compounds

Elements are made of different types of atoms

• True

• False

Which of the following is not an example of an element?

• Water

• Oxygen

• Carbon

Substances made of two or more elements chemically combined together are called ____________.

• Elements

• Mixtures

• Compounds

Compounds can be chemically separated

• True

• False

Water (H2O) can be classified as _____________

• an element

• a compound

• a mixture

___________ are made from two or more substances physically combined together

• Elements

• Mixtures

• Compounds

_______________ mixtures have visually distinguishable components.

• Heterogeneous

• Homogeneous

___________ mixtures appear uniform throughout.

• Heterogeneous

• Homogeneous

Mixtures can be separated __________

• Chemically

• Physically