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Chemistry Chapter 4 Review
Test Description: Atoms and Bonding
Instructions: Answer all questions to get your test result.
1) An ionic bond is the attraction between
A
An ion and an atom
B
Similarly charged ions
C
2 different atoms
D
Oppositely charged ions
2) What creates a metallic bond?
A
2 similar metal atoms bonded.
B
2 different metal atoms bonded by sharing electrons.
C
2 Oppositely charged ions bonded.
D
The attraction between a positively charged metal ion and free flowing electrons.
3) Which of the following best describes a metal crystal?
A
Positive metal ions surrounded by freely moving valence electrons
B
Metal atoms held together by covalent bonds
C
Metal atoms held together by ionic bonds
D
Neutral metal atoms surrounded by freely moving valence electrons
4) The atomic number of an element is based on the _________________.
A
Number of protons in its nucleus
B
Number of neutrons in its nucleus
C
Mass of its nucleus
D
Number of electrons around its core
5) A material is said to be ductile if it _____________
A
Can be hammered into sheets
B
Can be pulled out, drawn, into a long wire
C
Is a mixture of a metal with at least one other element
D
Can transfer heat or electricity to another material.
6) Which particles in atoms have a negative charge?
A
Nucleus
B
Electron
C
Neutrons
D
Protons
7) In an atom the number of protons equals the number of __________
A
Neutrons
B
Electrons
C
8
D
Neutrons + Electrons
8) Covalent bonds _________________ electrons as they form.
A
Steal
B
Trade
C
Share
D
Transfer
9) Ions form when atoms either ____________ electrons.
A
Lose or gain
B
Steal or trade
C
Share or loan
10) Magnesium bromide is a ionic compound with a chemical formula MgBr2. What does the 2 stand for?
A
There are 2 Bromine atoms in the compound
B
There are 2 magnesium atoms in the compound
C
Bromide has a 2- charge
D
Bromide has a 2+ charge
*select an answer for all questions
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