Atoms, Bonding, & The Periodic Table Chapter Review

Which property is shared by most covalent molecular compounds?

• high boiling point
• high melting point
• low melting point
• nonpolar bonds

When an atom loses an electron it becomes a

• positive ion
• negative ion
• neutral ion
• neutral atom

Magnesium bromide is an ionic compound with the chemical formula shown below. What does the "2" tell you?

• bromine has a 2- charge
• bromine has a 2+ charge
• there are two magnesium ions in the compound
• there are two bromine ions in the compound

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In the chemical formula for an ionic compound, which would be written first?

• The symbol of the positive ion
• the symbol of the negative ion
• the subscripts
• the non-metal atomic symbol

What is a double bond?

• a bond between two atoms
• one pair of electrons is shared between two atoms
• two pairs of electrons shared between two atoms
• two pairs of electrons shared between four atoms

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In the diagram of the atom below, what which sub atomic particle would represent protons?

• a
• b
• c

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NGSS.MS-PS1-1

In the diagram of the atom below, what which sub atomic particle would represent electrons?

• a
• b
• c

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What would be the best choice for the atomic number of the atom in the model?

• 5
• 4
• 9
• 18

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In the periodic table of elements, each column on the table is called a ___________________

• period
• group
• family
• row

What region of the periodic table contains the atoms that form covalent bonds?

• the left side
• the middle
• group 18 only
• the right side

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NGSS.MS-PS1-1