Chapter 2 Flashcards

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1
Q

matter

A

anything that takes up space and has mass

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2
Q

element

A

a substance that cannot be broken down to other substances by chemical reactions

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3
Q

compound

A

a substance containing two or more different elements in a fixed ratio

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4
Q

4 elements that make up all life

A

Carbon, Hydrogen, Nitrogen, Oxygen (HONC)

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5
Q

Essential Elements

A

Elements that are essential to life

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6
Q

Trace Elements

A

Those required by an organism in only minute qualities

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7
Q

Isotope

A

The same atom that has different number of neutrons

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8
Q

Potential Energy

A

Energy that matter possesses because of its location or position

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9
Q

Molecule

A

Two or more atoms held together by covalent bonds

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10
Q

Electronegativity

A

The amount that an atom pulls on its electrons

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11
Q

Anion

A

Negative Ion

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12
Q

Cation

A

Positive ion

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13
Q

Van der Waals interactions

A

Random movements of elections that cause momentary negative and positive poles

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14
Q

Photosynthesis Equation

A

6CO2 + 6H2O –> C6H12O6 +6O2

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15
Q

Dynamic Equilibrium

A

Where a reaction continues but the concentration of products and reactants remain the same

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