Multiple Choice
Which of the following statements is true?
A) An atom is the smallest particle known to exist.
B) There are only about 100 different kinds of atoms that combine to form all substances.
C) There are thousands of different kinds of atoms that account for a wide variety of substances.
D) A large atom can be photographed with the aid of an ordinary microscope.
E) None of these statements are true.
Correct Answer:
Verified
Correct Answer:
Verified
Q7: If a gram of antimatter meets a
Q11: If two protons are added to an
Q12: A positron orbiting an antiproton would make
Q13: Assuming all the atoms exhaled by Julius
Q14: If two protons are removed from an
Q16: The chemical properties of matter come mostly
Q18: Which of the following are electrically neutral?<br>A)proton<br>B)neutron<br>C)electron<br>D)ion<br>E)none
Q19: There are about as many atoms of
Q20: The air in this room has<br>A)mass.<br>B)weight.<br>C)energy.<br>D)all of
Q26: Compared to the mass of a hydrogen