Matter Test 1 Flashcards
What is the difference between mass and weight
Mass is the amount of matter
Weight is force of gravity on a certain amount of matter
Define the term “matter” using the words mass and volume
Matter is anything with mass and volume
What is the difference between mass and volume
Mass is the amount of matter
Volume is the amount of space matter occupies
What units are used to measure mass and volume
Mass- grams
Volume- mL and cm cubed
Which one of the following units provides the best measure of the volume of a plastic block
Cubic centimeters
What piece of lab equipment is used to measure volume? What is the piece of lab equipment that is used to measure mass?
Volume- graduated cylinder
Mass- electronic balance
Density is the amount of matter in a certain volume. What is the equation for calculating density?
d=m/v
What units are used to measure density?
g/cubic centimeter
Describe how you would measure the volume of a gold ring?
You know this
Does changing the amount of a substance change its density?
No, because density is a measurement per unit volume
If two objects are made from the same substance, will they have the same density?
Yes, because they will both have different masses and volumes but the same ratio
What is the density of water?
1g/ cubic centimeter
How will you know if an object will float
If it is under 1 gram or over
how is the volume of matter affected by temperature?
Yes, because hot-expansion cold- contraction
how does a change in volume affect the density of solids, liquids, and gasses?
volume increases density decreases visa versa
what is the law of conservation of mass?
as long as the mass is in a closed system the mass will always stay the same no matter what fase
what is a chemical reation?
A chemical reaction is when two substances react creating a new substance.
what is thermal decomposition?
a chemical reaction in which a compound is broken down by heating
