Matter- the Basics
Physical Properties
Chemical Properties
Changes
Miscellaneous
100
What are the two things matter has?
Mass and volume.
100
What is a physical property?
A physical property is a characteristic that can be observed/measured/seen WITHOUT changing the substance's identity (water is still water).
100
What is a chemical property?
Characteristics of an object that describe its ability to participate in different chemical reactions.
100
Physical or chemical change: grinding clumps of baking soda into a powder.
Physical change
100
My pencil box has a length of 10cm, a width of 10cm and a height of 5 cm. What is the volume of my pencil box? (include units!)
400 cm3
200
What do you call the amount of space an object takes up?
Volume
200
What is a state of matter?
The physical form that the substance has, such as solid, liquid, and gas.
200
What is a chemical change?
A chemical change is when one or more substances change into a brand new substance (new identity) with new properties.
200
Chemical or physical change: pouring vinegar on baking soda and watching bubbles form.
Chemical change.
200
If the book has a mass of 50g and a volume of 25cm3, what is the density of the book? Use the right units.
2 g/cm3
300
What is the tendency of an object to stay moving or to stay still?
Inertia
300
What is solubility?
Solubility is the ability of a substance to dissolve into another substance.
300
Why is a nail rusting a chemical property? (Hint: explain what is happening when the nail rusts)
When a nail rusts, the metal (iron) is making a chemical reaction with the oxygen in the air.
300
Chemical or physical change: milk smelling bad and tasting sour when it goes bad
Chemical change
300
How can density be used to tell apart two liquids that look the same?
If you pour the liquids together, the one with GREATER density will sink to the bottom.
400
What are the three states of matter?
Solid, liquid, and gas
400
How do you calculate density?
Density = Mass / Volume
400
What does an object burning have to do with chemical changes? (hint, use flammability to describe it!)
The flammability of an object lets us know whether or not it can burn, which is a chemical change in an object (between it and air).
400
Chemical or physical change: freezing water into ice
Physical change
400
If you have an irregularly shaped object (like a spoon), how would you measure its volume?
Measure the volume of an amount of water. Then, add the spoon in, then re-measure the volume including the spoon. Subtract the volumes for the volume of the spoon.
500
What is the difference between mass and weight?
Mass is the amount of matter inside of an object and weight is the measure of gravitation force on an object (forces due to gravity).
500
What are the units of density?
g/cm3 or g/mL (grams per centimeters cubed or grams per milliliter)
500
Why did the Statue of Liberty (made of copper) turn green?
The Statue of Liberty turned green because it had a chemical change, the copper reacted with the air.
500
Chemical or Physical Change: burning gasoline
Chemical change
500
You put a tablecloth down and place plates, forks, knives, and cups down. You grab the tablecloth and pull it very quickly. The plates, forks, knives, and cups do not change their position and remain still. What property of matter explains why they stayed put after you yanked the tablecloth?
Inertia.
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