Properties of Matter
Classifying Matter
Density
Changes in Matter
Chpt. 1 Pot Luck
100
This is the study of matter and how it changes.
Chemistry.
100
This is a substance that can not be broken down into any other substances by chemical or physical means.
An element
100
Density =
Density = Mass / Volume
100
This is a measure of how hot or cold something is.
Temperature
100
The basic particle from which all matter is made is called...?
An atom.
200
All matter meets these 2 requirements.
It has mass and takes up space
200
What do we call the force of attraction that holds atoms together in a compound?
Chemical bonds.
200
What are the 2 units of measurements used for volume (when calculating density)?
mL (milliliters) cm3 (cubic centimeters)
200
If you were to sit into a hot tub (at 103˚F)...in which direction would thermal energy flow between you and the water?
Thermal energy always flows from warmer to cooler, so.. it would flow from the water to your body.
200
Flexibility is an example of which property of matter?
A physical property.
300
Give 2 examples of chemical properties of matter.
Answers will vary
300
Identify the type of mixtures for each example below: 1. Pepsi 2. Salsa 3. Mayonnaise
1. Pepsi - Homogeneous 2. Salsa - Heterogeneous 3. Mayonnaise - Homogeneous
300
Corn syrup has a density of 1.33 g/mL. Would it sink or float if it were added to a beaker of water?
Since water has a density of 1.00 g/mL...corn syrup is more dense...and, thus, would sink.
300
Silver tarnishing is an example of what type of change?
A Chemical Change.
300
Calculate the volume (in cubic centimeters) of an object with the following measurements: length - 30 cm width - .25m height - 10cm
7,500 cubic centimeters
400
The melting point of salt is 801˚C. What type of property is this?
A physical property of salt.
400
Write the chemical formula for the following: 1. Water 2. Carbon Dioxide 3. Methane
1. Water - H2O 2. Carbon Dioxide - CO2 3. Methane - CH4
400
What is the density of an object that has a mass of 386 g and a volume of 20 mL?
19.3 g/mL
400
Which type of change in energy will result in the lowering of temperature around an object?
An endothermic change.
400
Identify which of the following are compounds: 1. Water (H2O) 2. Dihydrogen (H2) 3. Ammonia (NH3) 4. Ozone (O3)
What is A compound is made of 2 or more elements, so... 1. Water 2. Ammonia (both dihydrogen & ozone are molecules, not compounds)
500
Give 3 examples of physical properties of matter.
Answers will vary.
500
You need to remove, and collect, the solid material from a liquid mixture. What are 2 methods you could use to accomplish this task?
Distillation, Evaporation, and possibly Filtration
500
What is the volume of an object that has a density of 8.4g/mL and a mass of 126 g.
Volume = 15 mL
500
Is this an example of the conservation of mass: 2 Al + 6(HCl) = 2(AlCl3) + 3H2
Yes Al - 2 Al - 2 H - 6 H - 6 Cl - 6 Cl - 6
500
Give an example of both an endothermic and an exothermic reaction.
Answers will vary... Endo - combustion, digestion Exo - ice melting, dew forming (condensing)
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