Kinetic Theory of Matter
Thermal Energy
Heat Transfer
Substances and Mixtures
Abundant Elements
Properties of Matter
Density
100
DOUBLE POINTS
What is Mass?
What is volume?
The amount of matter in a substance.
The amount of space a substance occupies.
100
What has more thermal energy, a lit match? or the chair your sitting in right now?
The chair!
100
Which heat transfer method involves direct contact.
Conduction
100
What is the simplest form of matter that is considered a pure substance?
Element
100
What 4 elements are found in abundance in Earth's Oceans?
Sodium, Chlorine, Hydrogen, Oxygen
100
What type of change is REVERSIBLE?
Physical changes.
100
What formula is used to calculate density?
Density = Mass / Volume
200
What are the 3 common states of matter and how do their molecules act? (think movement and energy)
Solid - Minimal movement / least amount of energy
Liquid - More movement / more energy
Gas - Most movement / most energy
200
What is the average kinetic energy of molecules in an object?
Temperature
200
Explain thermal conductivity.
The measure of how quickly heat flows through a material.
200
What is the difference between a compound and mixture?
Compounds are chemically combined, and mixtures are physically combined.
200
What abundant element can be found in the Earth's crust, oceans, and atmosphere, as well as in all living things.
Oxygen
200
What are three ways in which physical properties can be measured?
Size, shape, odor, density, color, texture, luster, solubility, malleability, conductivity, temperature, etc.
200
Which object is the most dense?
Grape
300
Name 4 physical changes that occur during a transfer of thermal energy.
DOUBLE POINTS - If you name all 6.
Melting, Freezing, Condensing, Vaporizing, Sublimation, Deposition.
300
What direction does heat flow?
Double Points - When does it stop flowing?
From hot to cold
At equilibrium
300
Which heat transfer method allows for hot air balloons to travel up?
Convection
300
Explain the difference between a homogenous mixture and heterogenous mixture.
Double Points - Give an example of each.
Homogenous- Same throughout
Heterogenous - Different throughout.
300
Earth's Atmosphere is mostly made up of what two elements?
Double Points - What percentages of each?
Nitrogen - 78%
Oxygen - 21%
300
What type of properties can only be measured when matter changes?
Chemical
300
The mass of an object is 144 grams and the volume is 12 cm3, what is the density?
12 g/cm3
400
Matter is in constant motion. The _______ the amount of energy, the _______ molecular motion.
Greater, Greater
400
What is the theoretical temperature at which all matter stops moving?
Absolute Zero or 0 Kelvin
400
Explain why Hampton, Va receives fewer snow events that Richmond, Va.
Water has greater HEAT CAPACITY and Hampton being closer to the ocean is warmer on average than Richmond because it is further inland.
400
What are two parts of a solution. Explain each part.
Solvent - Does the dissolving
Solute - Gets dissolved
400
Name 3 of the 5 abundant elements found in the Earth's Crust.
Double Points - Name all 5.
Oxygen, Aluminum, Iron, Silicon, Calcium
400
Identify all the changes as Physical or Chemical.
**Flip to next slide**
400
Identify the density of the irregular shaped object if the mass of the object is 120 grams.
4 g/mL
500
The fourth state of matter is _______. Explain it in detail.
Plasma - gas with an electric charge (ionized)
500
What are 2 temperature scales commonly use around the world outside of a lab setting? and what is the freezing point of each.
Celsius - 0 degrees Celsius
Fahrenheit - 32 degrees Fahrenheit
500
Name all three heat transfer methods and provide an example for each.
Conduction
Convection
Radiation
500
Name 3 methods to separate mixtures.
Magnets, Filters, Evaporation, Physical Separation, etc.
500
What four elements are found in abundance in all living things?
Oxygen, Hydrogen, Carbon, Nitrogen
500
Name 2 types of chemical properties that can be measured or observed only when matter changes.
Change of color, change of odor, combustion, reactivity, flammability, corrosiveness, etc.
500
The side of a cube is 5cm, and the mass is 25 grams. What is the density?
.20 g/cm3
or
1/5 g/cm3