When matter changes but no new substance is produced and its identity stays the same
100
What are the two properties that define matter?
mass and volume
100
What is a graduated cylinder used to measure?
volume
100
What is the formula for calculating density?
D = M/V
Density = Mass divided by Volume
100
What kind of change is occurring if a nail is rusting?
chemical
200
What is a chemical change?
A change that occurs when matter is changed and a new substance is produced
200
Define volume:
the amount of space an object takes up
200
What is the basic unit we use when calculating mass?
gram
200
If an object sinks in water, its density must be...
more than one gram per cubic centimeter
200
What would a wooden cube float in water?
it is less dense than water
300
Give three examples of a physical change...
(answers will vary)
crushing a sugar cube, breaking glass, tearing a piece of paper
300
What are the states of matter?
solid, liquid, gas, plasma
300
What is the basic unit we use when calculating volume?
liter
300
What is the density of water?
1 gram/cubic centimeter
300
To find the density of an object, I would have to know its ______ and _______.
mass and volume
400
Give three examples of a chemical change...
(answers will vary)
burning sugar, digesting food, cooking food
400
What state of matter has no definite shape or volume?
gas
400
What is a cubic centimeter a measure of?
Length or volume
volume
400
If an object has a density of 0.9 g/mL, what will happen to it if we place it in water?
it will float
400
How would someone calculate the volume of an irregularly shaped object?
by using the water displacement method
500
If ice is melting, what kind of change is occurring?
physical change
500
What state of matter has a definite volume but no definite shape?
liquid
500
Describe the step by step process of the water displacement method...
fill a graduated cylinder with water. Get a measurement. Drop your object into the water. Measure the amount in the graduated cylinder. Subtract the new amount from the original amount of water. You have your volume!
500
How do we calculate volume for a regularly shaped object (such as a square, rectangle, etc)?
length x width x height
500
If an object is cut into two equal parts, does its density stay the same? Why or why not?
yes, because it is the same object just a smaller portion of it. Density does not change based on the amount of an object.