Unit 6 - Chemical Bonds

What elements does an ionic bond have?

• Metals & Metals

• Metals & Metalloids

• Metals & Non-metals

• Non-metals & Non-metals

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When an atom loses and electron, it forms a(n)

• anion

• neutral ion

• polyatomic ion

• cation

In the process of ionic bonding, ions come together because

• opposite charges repel

• positive and negative ions attract

• salt is magnetic

• like charges attract each other

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In the compound MgBr₂ the subscript 2 indicates that there are

• 2 atoms total

• 2 bromine atoms

• 2 molecules

• 2 magnesium

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Calcium Ca, and Chlorine Cl, what is the chemical formula for this ionic compound?

• Ca₂Cl

• CaCl₃

• CaCl₂

• CaCl

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The octet Rule is

• atoms gain 8 electrons

• atoms give away 8 electrons

• atoms give or take electrons from shell close to nucleus

• atoms give or take all their electrons from valence shell

When an oxygen ion meets the octet rule

• O⁺³

• O^-2

• 0⁺²

• O^-3

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What is the chemical formula for this molecule?

• SNa₃

• H₃O

• NaCl

• H₂O

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NGSS.MS-PS1-1

Carbon tetrachloride contains how many atoms of chlorine?

• 1
• 2
• 3
• 4

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NGSS.MS-PS1-1

An alloy that contains mainly copper and tin is

• Bronze

• Stainless Steel

• Brass

• Stirling Silver

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NGSS.MS-PS1-1