Chemistry Review: Question Preview (ID: 15788)


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Which phrase best describes atoms?
a) single-celled organism
b) smallest basic units of matter
c) parts of a nucleus
d) positively charted particles

Which of the following cannot be broken down by ordinary chemical means?
a) element
b) compound
c) molecule
d) bond

An ion is formed when an atom gains or loses
a) protons
b) neutrons
c) bond
d) electrons

The atomic number of an element represents
a) the number of protons OR electrons
b) the number of neutrons
c) the number of neurons
d) the number of protons + electrons

The atomic mass of an element represents
a) the number of protons + electrons
b) the number of protons + neutrons
c) the number of neutrons
d) the number of protons + electrons + neutrons

What is the symbol for mercury and how many protons does it have?
a) Mr, 80 protons
b) Mc, 80 protons
c) Hg, 200 protons
d) Hg, 80 protons

Which element has 17 electrons, 19 neutrons, 17 protons
a) Potassium
b) Neon
c) Chlorine
d) Sulfur

If an element is in Period 4 on the periodic table, you know it has
a) 4 electron orbitals
b) 4 valence electrons
c) 4 protons
d) 4 neutrons

If an element is in Group VIIIA or 18, you know it
a) is a noble gas with 18 valence electrons
b) is a noble gas with 8 valence electrons
c) is a non-metal with 8 valence electrons
d) is a metal with 18 valence electrons

Looking at the periodic table of elements, non-metals are
a) located adjacent to the stair-step line
b) located to the left of the stair-step line
c) located in Group 1 only
d) located to the right of the stair-step line

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