Subjects

Sections | |||
---|---|---|---|

Mixtures | 12 mins | 0 completed | Learn Summary |

Scientific Notation | 6 mins | 0 completed | Learn |

Accuracy & Precision | 5 mins | 0 completed | Learn |

Standard Deviation, Mean, Median & Mode | 7 mins | 0 completed | Learn |

Metric Prefixes | 17 mins | 0 completed | Learn Summary |

Significant Figures | 18 mins | 0 completed | Learn Summary |

Energy, Heat and Temperature | 7 mins | 0 completed | Learn Summary |

Physical & Chemical Changes | 7 mins | 0 completed | Learn Summary |

Dimensional Analysis | 28 mins | 0 completed | Learn |

Density | 14 mins | 0 completed | Learn Summary |

Intro to Chem Additional Problems | 51 mins | 0 completed | Learn |

Additional Practice |
---|

Filtration |

Types of Energy |

Additional Guides |
---|

The Scientific Method |

Physical & Chemical Properties |

**Metric Prefixes** are “labels” that can be placed in front of base units.

Concept #1: Understanding Metric Prefixes

**Transcript**

Now, what exactly is a metric prefix? Just understand it's kind of like a label that goes in front of what we call base units.

Now, what's a base unit? Good examples of base units are liters or seconds or grams or moles or minutes, these can be understood as base units and all a metric prefix is is a label that goes in front of that base unit, to describe what kind of base unit we're dealing with.

Here we're going to say we could have deciliters or kiloseconds or nanograms or millimoles or microminutes. The metric prefix is just a way of describing a change that's going on with that base unit, so they're just labels that go in front.

Concept #2: Using the Metric Prefix Chart

**Transcript**

If we take a look here at this chart, this gives us a majority of the metric prefix that you're responsible for. Now there are some that go after pico and there are some that go after tera, but for the most part, professors will stick to this core group of metric prefixes.

What we're going to have to say here is, just remember, this is very important, one—is associated with the metric prefix, so one is associated with each one of this metric prefixes. What does that mean?

Let's say I had a picometer. Meter is the base. Pico is the metric prefix that goes in front of it. Since one is associated with my metric prefix, we're going to say 1 picometer is equal to, see right here, 10-12 meters. It's a way of setting things where you form a relationship between the metric prefix and the base.

Let's say I had kilo. So let's say I had kilograms and I wanted to go to grams, so we'd say that for every 1, because kilo is a metric prefix for every 1 kg, it is 103 grams, so that's what I mean by 1 is associated with the metric prefix. So remember that when we're doing these types of metric prefix conversions.

Whenever using the metric prefix chart, remember that “1” is associated with the metric prefix.

Example #1: Convert the following to the desired units.

16.33 pm to m 172 GL to L

Example #2: Convert the following to the desired units.

0.73 cs to ns 729 kg to mg

Example #3: Convert the following to the desired units.

453 cm** ^{3}** to km

0 of 5 completed

Express 327 kilometers in units of nanometers.
a. 3.27 x 10 12 nm
b. 3.27 x 10 11 nm
c. 3.27 x 10 –4 nm
d. 3.27 x 10 14 nm

The mass of a sample is 550 milligrams. Which of the following expresses that mass in nanograms?
A. 5.5 x 10 8 ng
B. 5.5 x 10 6 ng
C. 5.5 x 10 11 ng
D. 5.5 x 10 –6 ng
E. 5.5 x 10 –10 ng

How many kL does a 1.25 × 108 cL sample contain?
A) 1.25 × 103 kL
B) 1.25 × 1013 kL
C) 1.25 × 104 kL
D) 1.25 × 1012 kL
E) 1.25 × 102 kL

Convert 4.39 x 10-23 g to ng.
a) 4.39x10-10 ng
b) 4.39x10-14 ng
c) 4.39x10-16 ng
d) 4.39x10-20 ng

A number expressed to 10 -6 s, relate to which of the following units?
a. micro seconds
b. nano seconds
c. kilo seconds
d. milli seconds
e. giga seconds

The radius of a helium atom 31.4 pm. What is the thickness in Gm?
a. 3.14 x 1022
b. 0.0314
c. 3.14 x 10 -17
d. 3.14 x 10 4
e. 3.14 x 10-20

Convert 100 cm3 to m3.
A) 1 × 10 -4 m 3
B) 1 × 10 8 m 3
C) 1 × 10 4 m 3
D) 1 × 10 0 m 3

Convert 15 m3 to liters.
A) 1.5 L
B) 1.5 × 10 2 L
C) 1.5 × 10 -2 L
D) 1.5 × 10 4 L

Which of the following is the smallest mass?
a. 1000 g
b. 1000 ng
c. 1000 mg
d. 1000 kg
e. 1000 ug

Which of the following sets of units is not in the order of increasing size?
a. mg < g < kg
b. uL < mL < L
c. ns < ms < s
d. mm < pm < cm
e. all of the above are in the correct order.

What is the SI base unit of length?a) mib) mec) cmd) kme) m

Which of the following does not equal 80 mL?a. 8 x 10 -11 GLb. 0.08 Lc. 8 x 10 -4 kLd. 8 cLe. 8 x 10 -7 nL

All of the following are SI base units of measurement, EXCEPTA) meterB) gramC) secondD) kelvinE) mole

How many mg does a 433 kg sample contain?A) 4.33 × 10-4 mgB) 4.33 × 107 mgC) 4.33 × 10-3 mgD) 4.33 × 106 mgE) 4.33 × 108 mg

How many cm3 are contained in 3.77 × 104 mm3?A) 3.77 × 104 cm3B) 3.77 × 101 cm3C) 3.77 × 10-10 cm3D) 3.77 × 1020 cm3E) 3.77 × 106 cm3

Convert:b. 3.14 kg to g

A house has an area of 195m 2. What is its area in:a. km2

A house has an area of 195m 2. What is its area in:b. dm2

A bedroom has a volume of 115m3. What is its volume in: b. dm3

A bedroom has a volume of 115m3. What is its volume in: cm3

Use the prefix multipliers to express each measurement without any exponents.a. 1.2 x 10 - 9 m

Use the prefix multipliers to express each measurement without any exponents. 22 X 10 -15 s

Use the prefix multipliers to express each measurement without any exponents.c. 1.5 X 109 g

Use the prefix multipliers to express each measurement without any exponents.d. 3.5 X 106 L

Use prefix multipliers to express each measurement without any exponents.a. 38.8 X 105 g

Use prefix multipliers to express each measurement without any exponents.b. 55.2 X 10 -10 s

Use prefix multipliers to express each measurement without any exponents.c. 23.4 X 10 11 m

Use prefix multipliers to express each measurement without any exponents.d. 87.9 X 10 - 7 L

Use scientific notation to express each quantity with only the base units (no prefix multipliers).b. 225 Mm

Use scientific notation to express each quantity with only the base units (no prefix multipliers). 133 Tg

Identify each of the following as measurements of length, area, volume, mass, density, time, or temperature: [Section 1.4](a) 25 ps(b) 374.2 mg(c) 77 K(d) 100,000 km2(e) 1.06 μm(f) 16 nm2(g) -78°C(h) 2.56 g/cm3(i) 28 cm3

Use appropriate metric prefixes to write the following measurements without use of exponents: (a) 6.35 x 10- 2 L.

Use appropriate metric prefixes to write the following measurements without use of exponents: (b) 6.5 x 10-6 s.

Use appropriate metric prefixes to write the following measurements without use of exponents: (c) 9.5 x 10-4 m.

Use appropriate metric prefixes to write the following measurements without use of exponents: (d) 4.23 x 10-9 m3.

Use appropriate metric prefixes to write the following measurements without use of exponents: (e) 12.5 x 10-8 kg.

Use appropriate metric prefixes to write the following measurements without use of exponents: (f) 3.5 x 10-10 g.

Use apprapriate metrie prefixes to write the following measurements without use of exponents: (g) 6.54 x 109 fs.

Use appropriate metric prefixes to write the following measurements without use of exponents: (a) 2.3 x 10-10 L.

Use appropriate metric prefixes to write the following measurements without use of exponents: ( b ) 4.7 x 10-6 g.

Use appropriate metric prefixes to write the following measurements without use of exponents: ( c ) 1.85 x 10-12 m.

Use appropriate metric prefixes to write the following measurements without use of exponents: ( d ) 16.7 x 106 s.

Use appropriate metric prefixes to write the following measurements without use of exponents: (e) 15.7 x 103 g.

Use appropriate metric prefixes to write the following measurements without use of exponents: (f) 1.34 x 10-3 m.

Use appropriate metric prefixes to write the following measurements without use of exponents: (g) 1.84 x 102 cm.

In the year 2011, an estimated amount of 35 billion tons of carbon dioxide (CO2) was emitted worldwide due to fossil fuel combustion and cement production. Express this mass of CO2 in grams without exponential notation, using an appropriate metric prefix.

Using your knowledge of metric units, English units, and the information on the back inside cover, write down the conversion factors needed to convert(a) mm to nm

Using your knowledge of metric units, English units, and the information on the back inside cover, write down the conversion factors needed to convert (b) mg to kg

Using your knowledge of metric units, English units, and the information on the back inside cover, write down the conversion factors needed to convert (a) μm to mm

Using your knowledge of metric units, English units, and the information on the back inside cover, write down the conversion factors needed to convert (b) ms to ns

a. How many kilograms are in one teragram?

b. How many nanometers are in 6.50 x 10 2 terameters?

c. How many kilograms are in 25 femtograms?

d. How many liters are in 8.0 cubic decimeters?

f. How many picograms are in one microgram?

The ebola virus is structured like a long filament that ranges from 974 to 1086 nm in length. If length of a virus filament is found to be 1046 nm, what would the the length be in cm?a. 1.046 x 1010 cmb. 1.046 x 10 -4 cmc. 1.046 x 1014 cmd. 1.046 x 10 -8 cme. 1.046 x 10-3 cm

The dimensions of an ameoba are approximately 87 um. Express this length in Mm. a. 8.7 x 10-11 Mmb. 8.7 x 1019 Mmc. 8.7 x 107 Mmd. 8.7 x 10-5 Mme. 8.7 x 10-14 Mm

The mass of a proton is 1.67 × 10 -27 kg. What is the mass of a proton in nanograms?A) 1.67 × 10 -12 ngB) 1.67 × 10 -18 ngC) 1.67 × 10 -15 ngD) 1.67 × 10 -21 ng

Convert 5 μm to meters.
A) 5 × 10 -3 m
B) 5 × 10 -6 m
C) 5 × 10 -9 m
D) 5 × 10 6 m

In the year 1900, the total area of the mountain covered by glaciers was 1.60 km 2. What is this surface area with units cm2?A) 1.60 x 1010 cm2B) 1.60 x 105 cm2C) 1.60 x 10-10 cm2D) 1.60 x 10-5 cm2

One-thousandth of a micrometer is a?
a. picometer
b. meter
c. millimeter
d. nanometer
e. kilometer

Which statemnent below is correct?
a. 100 mL = 1L
b. 10 mm = 1 cm
c. 150 g is greater than 0.150 kg
d. 1 microsecond = 106 seconds
e. all the above are correct

Which of the following is the largest mass?a. 1000 gb. 1000 ngc. 1000 mgd. 1000 kge. 1000 ug

How many 150-mg aspirin tablets can be made from 15.0 kg of aspirin? a. 100,000 b. 1,000,000c. 10000d. 10,000 e. 10,000,000

What is the difference between a cubic decimeter (SI) and a liter (metric)?

The area of a telescope lens is 7903 mm 2. What is the area in square feet (ft 2)?

The average thickness of a human hair is about 100 microns (µm).Convert the measurement to an SI unit.

How many milligrams of sodium sulfate are equivalent to 0.0562 kg?a. 5.62 x 10-2 mgb. 5.62 x 104 mgc. 56.2 mgd. 5.62 x 1010 mge. 5.62 x 107 mg

Convert 2.45 x 10-3 km to cm

e. How many microliters are in one milliliter?

The area of a 15-inch pizza is 176.7 in2. Express this area in square centimeters. 1) 1140. cm2 2) 448.8 cm2 3) 96.8 cm2 4) 69.57 cm2 5) 27.39 cm2

By what power of ten is a cubic kilometer greater than a cubic meter? A. 3 B. 9 C. 4 D. 8 E. 6

Enter your friends' email addresses to invite them:

We invited your friends!

Join **thousands** of students and gain free access to **46 hours** of Chemistry videos that follow the topics **your textbook** covers.