2) Which is not an example of matter?

A. water
B. air(i think it this one)
C. gold
D. sound

3) The amount of space an object occupies is called its .....
A. volume(i think it this one)
B. mass
C. electricity
D. gravity

4) Atoms in a molecule are joined together by..
A. chemical bonds(i think it this one)
B. magnetism
C. electricity
D. gravity

air is about 80% Nitrogen and 20% Oxygen both of which are matter.

guess again

3) volume is correct

4) is correct although actually chemical bonds are electrical in the end.

To find the answer to question 2), you need to identify which option is not an example of matter. Matter is anything that has mass and takes up space.

A. water - Water is an example of matter. It has mass and takes up space.
B. air - Air is also an example of matter. It has mass and occupies space.
C. gold - Gold is definitely an example of matter. It possesses mass and occupies space.
D. sound - Sound is not an example of matter. It is a form of energy that travels through matter, but it does not have mass or occupy space. Therefore, sound is the correct answer (not an example of matter).

For question 3), you need to identify the term that refers to the amount of space an object occupies.

A. volume - Volume is indeed the correct term for the amount of space that an object occupies. So your choice is correct.

B. mass - Mass refers to the amount of matter an object contains.

C. electricity - Electricity is a form of energy and doesn't directly relate to the amount of space an object occupies.

D. gravity - Gravity is a force, not a measurement related to space occupancy.

For question 4), you need to identify the method by which atoms are joined together in a molecule.

A. chemical bonds - Chemical bonds are responsible for holding atoms together in a molecule, so this is the correct answer.

B. magnetism - While magnetism can influence interactions between certain substances, it is not how atoms are joined together in a molecule.

C. electricity - Similarly, electricity does not directly join atoms together in a molecule.

D. gravity - Gravity is a force that acts on objects with mass and is not involved in the bonding of atoms in a molecule.