Vocab
Anything that has mass and takes up space
Matter
How much energy is required to raise an object’s temperature.
Specific Heat
How hot or cold something is; measure of average kinetic energy
Temperature
Mass over volume
Density
Does not have a fixed composition
Heterogenous
Pure substance that cannot be separated into simpler substances by physical or chemical means
Element
Equation for Specific Heat
Q= mc delta T
Atoms and molecules are always in motion
Kinetic Theory
A metal cube has a mass of 150 grams. When submerged in water, it displaces a volume of 50 cubic centimeters. What is the density of the cube?
d = 3 g/cm³
Combination of substances
Mixture
Made up of two or more different elements that are chemically combined
Compound
How much energy must be transferred as heat to 200 kg of water in a bathtub to raise the water temp from 25ᵒC to 37ᵒC?
Q= 10,032,000 J
The average temperature of a room is 75 degrees Fahrenheit. What is this temperature in Celsius?
23.89 Celcius
A block of metal has a mass of 120 g and a volume of 15 cm3. What is its density?
8 g/cm3
Tell what type of mixture this is.
Pizza
Heterogenous
Results in the formation of pure solid particles of a substance from a solution containing the dissolved substance
Crystallization
The specific heat of water is 4.18 J/gC. How much heat is required to raise 50 g of water by 10 degrees Celcius?
2090 J
Convert 25 degrees Celcius to Kelvin
298 K
210 g/cm3
Salt Water
Homogenous
Separation technique based on differences in the boiling points of substances involved
Distillation
A metal absorbs 500 J of energy as its temperature rises from 20 to 50 degrees Celcius. If the sample's mass is 25 kg, what is its specific heat?
0.67 J/kg C
Convert 150 F to Kelvin
338.706 K
68200 g
What would be the best way to separate a mixture of sand and saltwater?
Filtration