Physics 1010 - chp. 11

4) Atomic number refers to the number of a) protons in the nucleus. b) neutrons in the nucleus. c) nucleons in the nucleus. d) electrons in the nucleus.

a) protons in the nucleus.

10) If a gram of antimatter meets a kilogram of matter, the amount of mass to survive is a) 1 gram b) 999 grams c) 1 kilogram d) 1.1 kilogram

b) 999 grams

3) Which particle has the least mass? a) Proton b) Electron c) Neutron d) All about the same

b) Electron

8) The chemical properties of matter are due mostly to their a) protons. b) electrons. c) neutrons. d) atomic mass numbers.

b) electrons.

5) The nucleus of an electrically neutral iron atom contains 26 protons. How many electrons normally surround this nucleus? a) 1 b) 13 c) 26 d) More than 26

c) 26

6) Which of these has the greatest number of protons in its nucleus? a) Gold b) Mercury c) Lead d) Silver

c) Lead

Nuclei of atoms that make up a newborn baby were manufactured in a) the mother's womb. b) the food the mother eats before delivery. c) ancient stars. d) the Earth.

c) ancient stars.

2) The difficulty of taking a photograph of an atom with light is a) unwanted diffraction. b) that atoms are smaller than wavelengths of light. c) both of these d) Neither of these

c) both of these

9) How many atoms are in this carbohydrate molecule, C6 H12 O6? a) 3 b) 14 c) 18 d) 24

d) 24

7) Two protons added to an oxygen nucleus results in a) nitrogen b) carbon. c) helium. d) neon.

d) neon.