This is five questions please help asap (it is worth 100 points and i will give brainliest)

Question one:

Which of the following particles are found in the nucleus of an atom? (Select all that apply)

A. neutrons
B. protons
C. compounds
D. electrons

Question two:

Which are characteristics of an atom? (Choose all that apply.)

A. They are the smallest unit of matter
B. They are made in stars.
C. They can only be seen by an electron microscope.
D. They come from compounds.

Question three:
What is the referred to as the “building block” of all matter?

A. a nucleus
B. an electron
C. a compound
D. an atom

Question four:
Which are subatomic particles? (Select all that apply.)

A. nucleus
B. protons
C. electrons
B. neutrons

Question five:
Which are characteristics of matter? (Select all that apply.)

A. created from mixtures
B. has mass
C. takes up space
D. makes up atoms