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Matter!
Measurements and Calculations
Buoyancy
Miscellaneous
100
Which quantitative property is affected by the force of gravity?
Weight
100
How can you measure the mass of an object?
Use a triple beam balance.
100
Which has greater buoyancy – a balloon filled with air or a balloon filled with water?
A balloon filled with air, becasue it has less density and will float higher above the surface of a liquid.
100
Make a quantitative and a qualitative observation of something outside the window. You must label which was quantitative and which was qualitative.
Many Answers Possible
200
Name 3 characteristic properties of matter
density boiling point freezing/melting point magnetism solubility
200
What is the equation to calculate density?
density = mass / volume
200
Is a human more buoyant in salt water or fresh water? AND why?
Salt Water. Salt water is denser so a human will float more easily in salt water.
200
Which phase of matter is the least dense?
Gas
300
What physical property describes the thickness of a liquid (or its resistance to flow)?
Viscosity!
300
What are the TWO units we use to measure volume in class. (you must name both units to get any points)
mililiter (mL), cubic centimeter (cm^3)
300
Which of the following objects will float in rubbing alcohol, which has a density of 0.78 g/mL? a. Metal Ball (d=7.1 g/mL) b. Wax Candle (d = 0.9 g/mL) c. Foam Ball (d= 0.05 g/mL d. Water Balloon (d= 1.0 g/mL) e. Plastic toy (d=0.6 g/mL)
c. Foam ball (d=0.05 g/mL) e. Plastic toy (d=0.6 g/mL)
300
Describe how the particles are arranged AND how the particles move in a solid piece of matter.
They are arranged so that they are touching and packed closely together. Then cannot move around, but they vibrate in place.
400
Fill in the blanks: Matter is defined as something that _____________ and ______________
Matter is defined as something that... - takes up space and - has mass
400
Explain how to measure the volume of an irregularly shaped object
Water Discplacement! 1. pour water into a graduated cylinder and measure the water level. (using mL) 2. Submerge the object in the water 3. Measure the new water level. (using mL) 4. Subtract the final volume from the initial volume
400
What two factors determine if an object is buoyant?
1. The density of the object 2. The density of the liquid
400
What does it mean to “zero” the balance? AND Why is it important to zero the balance?
To "zero" the balance means to make sure all the beams are set to 0 g, and the needle on the balance points to zero. If you don't zero the balance, your measurements will not be very accurate.