Science 6 Chapter 3 Test Set A Question Preview (ID: 39286)


Chemical Bonding. TEACHERS: click here for quick copy question ID numbers.

Which is a property shared by most molecular compounds?
a) high boiling poing
b) high melting point
c) low melting point
d) nonpolar bonds

When an atom loses a electron, it becomes
a) a positive ion
b) a negative ion
c) a neutral ion
d) a neutral atom

Magnesium bromide is an ionic compound with the chemical formula MgBr₂. What does the 2 tell you?
a) Bromide has a 2- charge
b) There are 2 magnesium ions to each bromide ion
c) There are 2 bromide ions to each magnesium ion
d) Bromide has a 2+ charge

In the name of a chemical formula for an ionic compound, which item is written first?
a) the name of the positive ion
b) the name of the negative ion
c) the subscripts
d) the charges

The name of the chemical with the formula Na₂S is
a) sodium fluoride
b) magnesium sulfide
c) lithium oxide
d) sodium sulfide

What is a double bond?
a) A bond between two atoms
b) one pair of electrons shared between two atoms
c) two pairs of electrons shared between two atoms
d) two pairs of electrons shared between four atoms

Electrons involved in bonding between atoms are
a) valence electrons
b) inside the nucleus
c) close to the nucleus
d) positively charged

A mixture made of two or more elements, at least one of which is a metal, is called a(n)
a) superconductor
b) metallic bond
c) complex metal
d) alloy

Which of the following means that metals can be rolled into thin sheets or beaten into complex shapes?
a) ductility
b) malleability
c) conductivity
d) polarity

Which of the following groups contains the most reactive elements?
a) the alkali metals
b) the alkaline earth metals
c) the noble gases
d) the carbon family

Which of the following is the correct formula for carbon tetrachloride?
a) CaCl₄
b) C₄Cl
c) CaTc₄
d) CCl₄

What is the name for SO₂?
a) sulfur dioxide
b) monosulfur dioxide
c) disulfur monoxide
d) disulfur dioxide

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