Mass
What tool do we use to measure mass?
A scale
What tool do we use to measure the volume of a liquid?
Graduated cylinder
What does it mean for something to be considered "very dense"?
It means that it has a lot of mass crammed into a small amount of space
A gram is used to measure....
Mass
What is rule #1 for the significant figures?
All non-zero digits (1-9) are significant figures.
What is the name of the accurate scale that we used in class?
A triple beam balance
What is the math equation used to measure the volume of a solid?
L x W x H
What is the equation for density?
D = M/V
How many cm are in a meter?
100
Identify how many significant figures are in the following number: 0.000023
2. The zeros don't count they are leading zeros
What is the definition of MASS? "Weight" is not an acceptable answer.
How much matter (stuff) something is made up of.
How would I find the volume of a marble? Explain what it is.
Water displacement = water level with the marble minus the original water level.
What is the density of water? (correct answer must include a proper unit)
1g/mL
When would I use a cm3 as opposed to an mL?
When measuring the volume of a solid
What is the unit abbreviation for decagrams?
dkg or dag
What happens to your mass on a different planets?
Nothing - Mass does not change, weight does.
Which has a larger volume: a small, heavy rock or a fluffy, light cotton ball?
Volume is how much space something takes up: cotton ball.
How do you determine if an object will sink or float in water?
If the object is less dense than the water, then it will float. If the object is more dense than the water, then it will sink.
What are the two units we used for density?
g/mL and g/cm3
Convert the following measurement:
987.120 cm = ____________________ dkm
0.987120 dkm
If the density of water is 1g/mL and I have 463mL of water, how many grams of water do I have?
463grams
If the density of maple syrup is 2g/mL, and I have 16 grams of syrup, what is the volume of my maple syrup?
V = M/D
V = 16g / 2g/mL = 8mL
What happens to the density as I add more mass? Answer must explain why.
It stays the same. More mass means more volume, and because I divide mass by volume to get density, density always stays the same.
Which is larger a cm^3 or an mL? Explain.
Neither - they are equal to each other.
Explain the rule for how trailing zeros do and do not count as significant figures.
Trailing zeros count as a sig. fig. if they follow a digit 1 to 9 and there is a decimal in the number. They do NOT count if there is NOT a decimal point.