Atoms, Elements And Molecules 2 Question Preview (ID: 12670)


Practice Test Questions Covering Matter, Atoms, Mixtures, Compounds, Elements And The Periodic Table. TEACHERS: click here for quick copy question ID numbers.

The smallest unit of matter in this list is ________.
a) a gas
b) an atom
c) a cell
d) a molecule

The electrons in an atom are located in the ___________.
a) nucleus
b) electron cloud
c) positive charge
d) element

What element has 9 protons?
a) C
b) N
c) O
d) F

Which of the following is the chemical symbol for lead?
a) Ld
b) L
c) Pb
d) Sn

__________ is the smallest atom.
a) Hydrogen
b) Helium
c) Nitrogen
d) Particle

What element has 19 protons?
a) A
b) N
c) K
d) C

A certain atom has 18 protons, 18 electrons, and an atomic mass of 39.95. How many neutrons does it have?
a) 36
b) 22
c) 32
d) 40

A certain atom has 4 protons, 4 electrons, and 5 neutrons. Its atomic mass is ____.
a) 4
b) 9
c) 12
d) 13

Matter is anything that has _________ and takes up ________.
a) mass, space
b) color, odor
c) shape, atoms
d) weight, energy

Which of the following is the chemical symbol for copper?
a) Au
b) Cu
c) Co
d) C

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