Phys Sci 9 Bonds and Charges

what is an ion?

• a charged particle

• an atom with a different number of neutrons

• a substance formed from only one type of atom

Chlorine is in group 7, what charge would a chloride ion have?

• -

• 2-

• 3-

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

covalent bonding happens between which type of atoms?

• metal

• non metal

• metal and non metal

which of the following statements about ionic bonding is correct?

• ionic bonding is weak and requires less energy to break

• ionic bonding is the electrostatic attraction between oppositely charged ions

• ionic bonding happens when atoms share electrons

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In covalent bonding, a double covalent bond is formed by

• A single shared pair of electrons

• two shared pair of electrons

• three shared pair of electrons

what is a molecule?

• Two or more atoms covalently bonded

• two substances mixed together that can be easily separated

• a specific quantity of atoms or particles of any substance

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which of the following statements about metallic bonding and structure is correct?

• metallic bonding is the attraction between oppositely charged ions

• metal ions forma regular pattern called a lattice

• outer shell electrons are delocalised and free to move throughout the structure

which of the following statements about cations is correct?

• They have more electrons than protons

• They have protons than electrons

• They have same number of protons and electrons

oxygen atom become oxide ions with a charge of 2-. How does this occur?

• they gain 2 electrons

• they lose 2 electrons

• they share 2 electrons

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