Gen Science Unit 10 Review

What is the main purpose of forming chemical bonds in compounds?

• To increase the atomic mass of elements

• To hold atoms or ions together

• To create electrical charges

• To isolate atoms from each other

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What happens when chemical bonds break?

• Atoms lose their chemical properties

• Atoms stop interacting with each other

• Atoms rearrange and new bonds form

• Atoms turn into different elements

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Why do atoms form chemical bonds?

• To balance electrical charges within a molecule

• To form more atoms

• To disintegrate into simpler substances

• To give atoms stable electron configurations

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What is the primary reason atoms bond together?

• To increase energy

• To decrease stability

• To complete electron shells

• To create light

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What is the purpose of using models like the ball-and-stick and space-filling models?

• To predict the chemical reactions between compounds

• To show how a compound's atoms are bonded

• To measure the exact size of atoms

• To determine the color of chemical compounds

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Which of the following is NOT a physical property of matter?

• Color

• Weight

• Chemical reactivity

• Hardness

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What causes an ionic bond to form?

• Attractions between similarly charged atoms

• Attractions between oppositely charged atoms

• Repulsion between oppositely charged atoms

• Repulsion between similarly charged atoms

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What types of elements typically form ionic bonds?

• A metal and a metal

• A nonmetal and a nonmetal

• A metal and a nonmetal

• A metalloid and a nonmetal

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What are ions?

• Atoms with no charge

• Atoms that share electrons evenly

• Atoms that have a pos. or neg. charge

• Atoms that contain only neutrons

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What charge does a cation have?

• Negative

• Neutral

• Positive

• Variable

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