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Chemistry 151 > Chapter 1 > Flashcards

Chapter 1 Flashcards

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1
Q

Chemistry

A

The study of matter and the changes that it undergoes

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2
Q

Law

A

concise statement that describes the relationship between phenomena

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3
Q

Theory

A

unifying principle that explains a body of facts

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4
Q

Matter

A

anything that occupies space and has a mass

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5
Q

3 states of matter

A

solid, liquid, gas

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6
Q

Solid

A

particles held in fixed positions with little freedom of motion

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7
Q

Liquid

A

particles are free to move/slide past one another; takes the shape of its container

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8
Q

Gas

A

particles separated by distance with constant, random motion; expandable or compressible

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9
Q

Pure substances

A

matter with a definite or constant composition

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10
Q

Elements

A

substances that cannot be broken down into simpler substances

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11
Q

Compounds

A

consist of two or more elements

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12
Q

Mixture

A

combination of two or more substances

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13
Q

Homogenous mixture

A

composition is uniform throughout

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14
Q

Heterogenous mixture

A

composition is not uniform

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15
Q

Length SI unit

A

meters (m)

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16
Q

Mass SI unit

A

kilograms (kg)

17
Q

Time SI unit

A

seconds (s)

18
Q

Current SI unit

A

amperes (A)

19
Q

Temperature SI unit

A

Kelvin (k)

20
Q

Tera

A

10^12

21
Q

Giga

A

10^9

22
Q

Mega

A

10^6

23
Q

Kilo

A

1,000 or 10^3

24
Q

Deci

A

1/10th or 10^-1

25
Q

Centi

A

1/100th or 10^-2

26
Q

Milli

A

1/1000th or 10^-3

27
Q

Micro

A

10^-6

28
Q

Nano

A

10^-9

29
Q

Pico

A

10^-12

30
Q

Density equation

A

D=m/v

31
Q

Properties of Matter

A
  1. Chemical
  2. Physical
  3. Extensive
  4. Intensive
32
Q

Accuracy

A

how close measurement is to the true value

33
Q

Precision

A

how close multiple measurements are to one another

Chemistry 151 (2 decks)

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