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Unit 4 Test Flashcards

(19 cards)

1
Q

ionic bond

A

chemical bond, or energy transfer, between a metal (cation) and a non-metal (anion).

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2
Q

What must you do when drawing an ionic bond?

A

Write the charges right next to the chemical symbols

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3
Q

covalent bond

A

chemical bond where electrons are shared

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4
Q

metallic bond

A

many electrons are shared by many atoms

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5
Q

chemical reaction

A

matter reacting and producing a new substance

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6
Q

What are the 4 clues that a chemical reaction has occurred?

A
  1. color change
  2. energy change
  3. solid formation
  4. gas formation
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7
Q

exothermic reaction

A

reaction that gives off heat

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8
Q

What side is the exothermic energy on?

A

the product side

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9
Q

endothermic reaction

A

reaction that absorbs heat, so the temperature lowers

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10
Q

What side is the endothermic reaction on?

A

the reactant side

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11
Q

chemical formula

A

states how many atoms of each element are in each compound

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12
Q

subscript

A

used to indicate when there is one one or more of an atom in a compound

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13
Q

chemical equation

A

written representation of chemical reaction

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14
Q

coefficient

A

number in front of the chemical symbol that’s used to balance the number of atoms in a chemical equation

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15
Q

reactant

A

chemicals reacted together in a chemical reaction (on left)

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16
Q

product

A

new materials in a chemical reaction (on right)

17
Q

law of conservation of mass

A

atoms cannot be created or destroyed in a chemical reaction

18
Q

cation

A

a positively charged ion that’s usually a metal

19
Q

anion

A

a negatively charged ion that’s usually a non-metal