ELEMENTS AND COMPOUNDS

Compounds are made up of elements.

• True

• False

Both elements and compounds are substances.

• True

• False

Salt is an example of element.

• True

• False

Sodium bicarbonate and acetic acid are examples of compounds.

• True

• False

Compounds can be separated by ordinary physical means.

• True

• False

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

• a gas at room temperature.

• given off by green plants.

• made of two different elements.

• useful to human beings

Is sugar (C₁₂H₂₂O₁₁) an element or a compound?

• Element

• Compound

How many elements are represented in the compound?
Na₂CO₃

• 1

• 3

• 2

• 4

What is the difference between Co and CO?

• CO is an element but Co is a compound

• CO is two elements and Co is only one element

• Nothing is different. They are the same thing.

• Co is not a pure substance

NaCl is an example of a compound that contains helium and oxygen atoms.

• Agree

• Disagree