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sdfxgc > chemistry unit 1 > Flashcards

chemistry unit 1 Flashcards

1
Q

whats density

A

a substance mass per unit volume

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2
Q

whats accuracy

A

how close a measurement is to the true volume

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3
Q

Luster

A

a shine or sheen especially from reflected light

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4
Q

Electron

A

the negative subatomic particle

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5
Q

Meniscus

A

the curved surface of the liquid in the tube

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6
Q

Independent variable

A

what the experimenter changes

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7
Q

volume

A

the amount of space a substance or object occupies

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8
Q

Chemical property

A

indicates how a substance reacts

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9
Q

MOHS hardness

A

scale from 1-10 1=graphite 10=diamonds

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10
Q

how close a series of measurements are to each other

A

Precision

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11
Q

the neutral subatomic particle

A

Neutrons

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12
Q

the amount of matter in an object

A

mass

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13
Q

cen be shaped and deformed without breaking

A

Malleability

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14
Q

observed with the senses

A

Physical property

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15
Q

the results/outcomes

A

Dependent variable

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16
Q

the positive subatomic particle

A

protons

17
Q

SDS

A

safety data sheet

18
Q

What is the formula for calculating density

A

Density = Mass / Volume

19
Q

Express the following numbers in scientific notation 4,500,000

A

4.5 x 10 ^6

20
Q

Express the following numbers in scientific notation 0.00062

A

6.2 x 10 ^-4

21
Q

Express the following numbers in scientific notation 8,940,000,000

A

8.94 x 10 ^9

22
Q

Express the following numbers in scientific notation 0.0000000254

A

2.54 X 10 ^-8

23
Q

Express the following numbers in scientific notation 36,000

A

3.6 X 10 ^ 4

24
Q

Convert the following from scientific notation to standard form:
3.87 x 10-6

A

.00000387

25
Q

Convert the following from scientific notation to standard form:
9.21 x 10 9

A

9210000000

26
Q

Convert the following from scientific notation to standard form:
2.22 x 10 3

A

2,220

27
Q

Convert the following from scientific notation to standard form:
6.76 x 10 -4

A

.000676

28
Q

Convert the following from scientific notation to standard form:
3.45 x 10 8

A

345,000,000

sdfxgc (6 decks)

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