Matter & Measurement

What is the mass, in kg, of a 2.12-g piece of lead?

2.12 x 10^-3 kg

Order the steps in solving unit converting to beginning with the first

1. Identify the givin units and the desired units in the problem 2. Determine the conversion factor necessary to relate the giving unit to the desired units 3. Arrange the conversion factors so the unwanted units cancel 4. Perform the numerical calculation

You are asked in a problem to convert a given quantity

1 mg / 10 ^-3 g

Order the following length measurements from largest to smallest

1. 10 km 2. 10 m 3. 10 cm 4. 10 mm 5. 10 nm

Order the following mass of measurement from smallest to largest. Smallest measurements at the top.

1. 10 ug 2. 10 mg 3. 10 g 4. 10 kg 5. 10 Mg

Match each state:

Solid: Maintains it's shape and has a fixed volume. Liquid: Had a fixed volume, but not a fixed shape. Gas: Has neither a fixed shape nor a fixed volume.

Which of the following is the correct rule for significant figures in addition and subtraction?

The answer is rounded to give the same number of decimal places as the original number with the fewest decimal places

Match the quantities on the left with the number of significant figures in each.

0.0005 - 1 3.4 - 2 4970 - 3 0.3492 - 4 530.02 - 5 65.2 - 3 1,265 - 4 255.345 - 6

What is the solution to the expression shown below, rounded to the correct number of significant figures? 492.6 x 1.02 / 76,000

0.0066

The density of palladium is 12.0 g/cm^3. What volume in liters would be occupied by 532 g of palladium?

0.0443 L

What is the volume in cubic cm of a piece of gold whose mass is 5.23 g? The density of gold is 19.3 g/cm^3.

0.271 cm ^3

Which number below is rounded to the significant figure? 0.4937

0.494

Order the following numbers from smallest to largest:

1.))) 3.5 x 10 2.))) 6.2 x 10 ^-2 3.))) 2.8 x 10^3 4.))) 1.1 x 10^6

Which of the following is the largest volume?

1.2 x 10^4 mL

Water boils at ____.

212 Degrees Fahrenheit 100°C 373 K

Physical change

A change that does not entail any change in chemical composition

Matter

Anything that occupies space and has mass

Which statement applies to all chemical changes?

At the end of all chemical changes, a new substance is produced.

Which of the following statements ONLY list properties?

Bromine is reddish brown in color and boils at 59 degrees Celsius

Natural materials

Cotton, silk, wool

On Celsius temperature scale, water freezes at ____ degree Celsius, and boils at _____ degree Celsius.

Freezes - 0 Boils - 100

Which statement below correctly states how numbers are rounded

If the first dropped digit is 5 or greater, the last kept digit is increased by 1

Matter

Is anything that has mass and volume

Match each type of measurement with its metric basic unit:

Length- Meter (m) Mass- gram (g) Volume- liter (L)

The metric unit of volume is the ___ which has a volume equal to that of a cube measuring 10 ____ on each side

Liter 10 cm

Every measurement is composed of a ______ and a _____.

Number and a unit

Which of the following will float on top of water?

Olive oil (0.92 g/mL) Maple wood (0.74 g/cc)

Density is correct they described as ___.

Physical property

A conversion factor is formed by writing an equality as a ____.

Ratio

Chemical properties

Results in a change in the composition of a material

An exact number results or as a part of a definition

While inexact number results from the measurement or observation and contained uncertainty

Specific gravity is a quantity that ____. (compares the density of a substance with the density of water at 4°C)

Without units

Specific gravity is the ratio of which two units

density of water, density of a substance

The following units are possible for density

mg/dL kg/L g/cc

What is the difference between the Kelvin scale and the Celsius scale?

the zero point of the scale

Select all the metric unit equalities below that are correct

• 1 ng = 10 ^-19g • 1 Mg = 10^6g • 1 m = 10^3 mm • 1 km = 10 ^3 m

Which of the following calculations are reported with the correct number of significant figures?

• 51.45 x 0.274 = 14.1 • 1054/205 = 5.14

Select all of the numbers below that contain three significant figures

• 6.09 • 0.0295 • 843

Select all the statements that correctly describes a mixture

• The composition of a mixture can vary depending on the sample • a mixture can be separated into its components by physical change

Select all the statements that apply in describing the states of matter

• The particles of a solid like close together and are arranged in a regular 3-D array • The particles of a liquid are close together but can randomly move around sliding passed one another

The general formula for a number written in scientific notation is Y x 10^x. which of the following statements about the formula are correct?

• Y is a number who's absolute value is between 1 and 10 • Y is called the coefficient • X can be any positive or negative whole number

What is the correct value for 60. mi/hr, expressed in m/s?

27 m/s

What is the correct value in Kelvins for 59°F

288 K

True or false: zeros to the right of the last of the non zero digit are always significant

False

When multiplying and dividing numbers with significant figures the answer should be rounded to the same number of significant figures as the number with the _____ significant figures

Fewest

_____ is the measure of the amount of matter in a given sample or object, whereas ____ is the force on matter due to gravity.

Mass, weight

Chemistry is the study of ____ - it's composition, ____, and transformations.

Matter, properties

Mass

Measure of the amount of matter that an object contains

The base unit for linked in the metric system is the ____.

Meter

One cubic cm (cm^3; commonly abbreviated as cc) has the same volume as 1 ___.

Milliliter

Which of the following statements about determining the number of significant figures in a measurement are correct?

• a zero counts as a significant when it occurs at the end of a number with a dec point • all non zero digits are always significant

Select all the statements that correctly describe elements.

• elements cannot be broken down into simpler substances through chemical changes • the known elements are listed on the periodic table • elements are pure substances

Select all the statements that apply to the metric system.

• the prefix of the unit name indicates whether the unit is larger or smaller than the base unit. • each type of measurement has a base unit. • all other units are related to the base unit by powers of 10.

Select all the statements that currently describe compounds

•Compounds are formed by chemically combined into one more elements • compounds are pure substances

Select all the statements that correctly describe a conversion factor.

•The conversion factor must cancel out the unwanted unit. • the conversion factor must be arranged so that the denominator in one term cancels the numerator in another term. • conversion factors are used to convert one unit to another.