Any substance that has a definite composition. Examples include water, aluminum, and sugar.
What is a chemical?
100
Characteristics of a substance that can be determined without changing the identity of the substance.
What are physical properties?
100
A sample of matter, either a single element or a single compound that has definite physical and chemical properties.
What is a pure substance?
200
mL, cc, cubic centimeters, L, ...
What are some units for volume?
200
How many mL are in 5 gallons?
There are 18,927.1 mL in 5 gallons.
200
The process by which one or more substances change to produce one or more new substances. Examples include digestion, decay, cooking food, and vinegar added to baking soda.
What is a chemical reaction?
200
Density is an example of this kind of property.
What is a physical property?
200
Pure substances that contain only one kind of atom.
What is an element?
300
Celsius, fahrenheit, Kelvin...
What are some units of temperature?
300
How many mg are in 65 kg?
There are 65,000,000 mg in 65 kg.
300
Solid, Liquid and Gas
What are the physical states of matter?
300
Characteristics that can only be identified by trying to cause a chemical change.
What are chemical properties?
300
A substance made up of two or more elements joined by chemical bonds.
What is a compound?
400
seconds, hours, centuries, minutes...
What are some units of time?
400
How many mm are in 23 inches?
There are 584.2 mm in 23 inches.
400
Changes in which the identity of the substance does not change. (Examples: Melting an ice cube, and sugar dissolved in water)
What are physical changes?
400
Characteristics such as color, mass, odor, boiling point, and melting point.
What are physical properties?
400
A mixture that is uniform throughout.
What is a homogeneous mixture?
500
g/mol and g/mL (provide two separate questions)
What are the derived units for molar mass? What are the derived units for density?
500
5000 feet per second converts to how many miles per hour?
5000 ft/sec = 3409.1 miles/hr
500
When writing out a chemical reaction, these are put on the left side of the arrow.
What are the reactants?
500
These are characteristics that describe how well a substance reacts with another substance, or if it is combustible, or if it dissolves in acid.
What are chemical properties?
500
Pond water, chocolate chip cookies, tacos, and gravel are all examples of this.