CHEM 1405 Chapter 1

2.54 cm=_______in

1 in

454 g= ______ lb

1 lb

946 mL= _______qt

1 qt

1 L=_______qt

1.06 qt

1m=______yd

1.09 yd

1 L = ___ dL

10 dL

1 cm = ______ mm

10 mm

1 m = ______ cm

100 cm

1m= ________cm

100 cm

1 dL = ____ mL

100 mL

1 kiloliter (kL) = _______ L

1000 L

1 kg = _____ g

1000 g

1 kg= ______g

1000 g

1 kilogram (kg) = ________ g

1000 g

1 kilometer (km) = ______ m

1000 m

1 L = ___mL

1000 mL

1 L=______mL

1000 mL

1 g = ____ mg

1000 mg

1 m = ______ mm

1000 mm

1 kg = _____ lb

2.20 lb

1 kg= _______lb

2.20 lb

Water boils at:

212 ºF 100 ºC

Water freezes at:

32 ºF 0 ºC

1m=_______in

39.4 in

Which of the following contains chemicals? A. sunlight B. fruit C. milk

B. fruit C. milk sunlight is just energy

A temperature scale on which water has a freezing point of Oº and a boiling point of 100º.

Celsius (ºC) temperature scale

an official system of measurement used throughout the world for units in length, volume, mass, temperature, and time.

International System of Units (SI)

A temperature scale on which the lowest possible temperature is O K.

Kelvin temperature scale

T/F: A unit on the Kelvin scale is called a kelvin (K) and is not written with a degree sign.

T

T/F: Scientists measure mass rather than weight because mass does not depend on gravity.

T

What is the standard now used to determine a second?

an atomic clock

organic- study of substances that contain carbon inorganic- study of all substances except those that contain carbon. general-study of the composition, properties and reactions of matter

branches of chemistry

a unit of length in the metric system.

centimeter (cm)

substances that have the same composition and properties wherever found. often substances made by chemists that you use everyday. ex) toothpaste

chemicals

-the study of matter, its composition, structure, properties, and reactions of matter and the energy -it happens all around you everyday

chemistry

a ratio in which the numerator and denominator are quantities from an equality or given relationship.

conversion factor

the relationship of the mass of an object to its volume expressed as grams per cubic centimeter, grams per milliliter, or grams per liter.

density

a relationship between two units that measure the same quantity.

equality

a number obtained by counting or by definition.

exact number

the metric unit used in measurements of mass.

gram (g)

the SI standard unit of mass.

kilogram (kg)

metric unit for volume that is slightly larger than a quart.

liter (L)

A measure of the quantity of material in an object.

mass

another word for all substances that make up our world. ex) antacid tablets, water, glass, & air

matter

anything that has a mass and occupies space.

matter

a number obtained when a quantity is determined by using a measuring device.

measured number

What is the SI and metric unit of time?

seconds (s)

one of the few unitless values you will encounter in chemistry.

specific gravity

the relationship between the density of a substance and the density of water.

specific gravity (sp gr)

the amount of space occupied by a substance.

volume

measure of the gravitational pull on an object.

weight