Volume
What is the definition of volume?
Give an example of a physical change
What is temperature?
The measure of how hot or cold something is, related to the motion and energy of the particles of matter.
What is the definition of weight?
How would I find the volume of a cardboard box? (equation)
Length x width x height
A measure of the mass of a material in a given volume
Rust, combustion, elephant toothpaste, yeast, etc
What is thermal energy?
The total energy of the motion of all the particles in an object.
What is the definition of mass?
The amount of matter in an object.
How would I find the volume of an irregular object, such as a rock?
Displacement- place in beaker and see how much water is displaced
The mass of my box is 30 grams. The volume of my box is 800 cm^3. What is the density?
0.0375 g/cm^3
What is the difference between a chemical and physical change?
Physical- changes form of matter
Chemical- a brand new substance is created
Describe how thermal energy moves through matter.
Moves from warmer matter to cooler matter.
Would your mass or your weight change if you went to the moon? Why?
Weight, because weight is dependent on the force of gravity.
A toy is dropped in 100 mL of water. After the toy has been dropped in the water, it looked like there was 136 mL of water in the beaker. What was the volume of the toy?
36 mL^3
The mass of a rock is 5 g. When put in water, it displaces 2 mL of water. What is the density?
2.5 g/mL
If I started with 6 hydrogen atoms, 2 oxygen atoms, and 4 carbon atoms, how many of each atom will I end up with after I perform a chemical reaction? Why?
Describe what occurs during an exothermic change
Energy is released (combustion)
Why would scientist choose to measure matter by mass instead of by weight?
Because matter does not change based on the force of gravity, weight does.
Bill Nye is going on vacation and needs to make sure his carry on is small enough for the plane. The length of his suitcase is 50 cm, the width is 30 cm, and the height is 20 cm. What is the volume of his suitcase?
30,000 cm^3
The density of my rock is 0.45 g/mL^3. The volume is 2 mL. What is the mass?
0.9 grams
Describe the law of conservation of mass.
In any physical or chemical change, mass is not created or destroyed. It is only transformed.
Energy is absorbed (ice melting)
Describe how the force of gravity and weight are related to each other.
How much something weighs is a measure of how much gravitational force is need to keep it down on the earth.