chemistry measurement

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57 mL = ______ L

0.057

1cm³ = ___ mL

1

How many significant digits area in the number 0.009?

1

Multiply the following three numbers and report your answer to the correct number of significant figures: 0.020 cm x 50 cm x 11.1 cm

1 x 10 cm³

2 cm = ______mm

20

The speed of light in a vacuum is exactly 299,792,458 meters per second. Write this number in scientific notation with the coefficient rounded to the hundredths place.

3.00 × 10⁸

Find the sum of 23.6 liters, 4.75 liters, 12.065 liters, and 9.11 liters using the correct precision.

49.5 L

67.2 m = ______ cm

6,720

7,939 mg = ______ g

7.939

A problem solving method scientists use to convert units of measurement. Uses equivalence statements as ratios and cross out units.

Dimensional Analysis

density formula

density = mass/volume

water's density?

1.00g/mL

1 m = __ centi meter

10^2

1 kilo meter=__m

10^3

1 meter=__ milli meter

10^3

1 mega meter= __ m

10^6

1 meter = __ micro meter

10^6

1 giga meter=__ m

10^9

1 meter= __ nano meters

10^9

3.5 g = ______mg

3,500

Write 3,465 in scientific notation.

3.465×10³

2.4+1.313=?

3.7

How many significant digits are in the number 0.000005721?

4

Write 45,870,320 in scientific notation.

4.587032 × 10⁷

Divide the following numbers and report your answer to the correct number of significant figures: 0.530 g / 0.1010 mL = ?

5.25 g/mL

Which symbol makes the following statement true? 7,500 ______ 7.5 × 10³

=

Which symbol makes the following statement true? 568 ______ 5.1 × 10²

>

1m=10²cm. Unit prefix meaning one hundredth. Symbol = c

Centi

An equivalence statement written as a ratio: 1inch/2.54cm or 2.54cm/inch

Conversion Factor

D=M/V. The ratio between mass and volume.

Density

system used in the US

English system

2 statements with different units that are equal. Ex: 1 inch = 2.54 cm

Equivalence statement

10⁹m= 1Gm. Unit prefix meaning one billion. Symbol = G

Giga

K = C + 273.15. A temperature scale with zero degrees K defined as absolute zero (no molecular movement)

Kelvin Scale

10³m=1 km. Unit prefix meaning one thousand. Symbol = k

Kilo

The amount of matter in an object. SI unit = kg

Mass

10⁶m=1 Mm. Unit prefix meaning one million. Symbol = M

Mega

1m=10⁶µm. Unit prefix meaning one millionth. Symbol = µ

Micro

1m=10³mm. Unit prefix meaning one thousandth. Symbol = m

Milli

1m=10⁹nm. Unit prefix meaning one billionth. Symbol = n

Nano

Reducing the digits in a number while trying to keep its value similar.

Rounding off

System of units of measurements that is widely used all over the world. There are only four units that we covered in depth: Mass (kg), length (m), volume m³, temperature (k)

SI units

Way of writing very small or very large numbers. Consists of a coefficient, base ten and an exponent. Ex: 2.5 x 10³

Scientific notation

All certain digit and one estimated digit.

Significant figures

The amount of space that a substance or object occupies. SI = m³

Volume

rule for # of sig figs in addition/subtraction

answer can go as many decimal places as the number with the fewest decimal places

rule for # of sig figs for division

answer should have as many sig figs as the number with the fewest sig figs

rule for sig figs for multiplication ex) 1.4 x 2.404

answer should have as many sig figs as the number with the fewest sig figs

conversion between fahrenheit and celcius

f= 1.8c + 32

SI stands for

international system

conversion between celsius (C) and Kelvin (K)

k= c+273

A measurement system based on the number 10 which uses prefix to make the unit larger or smaller than the base.

metric system

the ratio of the density of a given liquid to the density of water at 4 degrees C

specific gravity

part of measurement that tells us which scale or standard is being used to represent the results of the measurement

unit

A particular amount (g, L, km)

units

3 apples has how many significant figures?

unlimited

1 cm^3=1mL=1 g for which substance only?

water


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