States of Matter
Gas, Liquid, and Solid.
What needs to be added or removed from an object to cause a change of state?
Thermal Energy or Heat
What are the two requirements for something to be considered matter?
Have mass and take up space.
Write out the formula for Density in words (no mathematical symbols! Just words!)
Density equals mass divided by volume
If I have an object that has a density of 0.8 g/mL, will it sink or float in water?
Float
Which states of matter take the shape of the container they are placed in?
Gas and Liquid
What are the three changes of state that occur when thermal energy is ADDED to a material?
Melting, Evaporation, Sublimation
Which of the following are considered to be matter? Fog, Rainbow, Shadow, Helium, Rock, Water, Fire
Fog, Helium, Rock, Water
A student measures the mass of an 9 mL rock to be 72 grams. What is the density of the rock? (remember units!)
8 g/mL
Physical Property or Chemical Property? Density
Physical
Describe the particle motion of liquids and gases.
Liquids slide around and gases fly around.
What are the three changes of state that occur when thermal energy is REMOVED from a material?
Condensation, Deposition, Freezing
What is the definition of mass?
Measure of how much matter is in an object.
I have a graduated cylinder with 60 mL of water in it. After I place a toy car in the water, it moves up to 88 mL. What is the volume of the car?
28 mL
Physical Property or Chemical Property? Flammability
Chemical
Describe the particle arrangement of solids and liquids.
Solid and liquid particles are close together.
Describe what happens to the Kinetic Energy and Particle Motion when a solid melts into a liquid.
Kinetic energy increases and particles begin to slide around, moving more.
What is the definition of weight?
Measure of gravitational pull on an object.
I have a block that has a length of 5 cm, height of 7 cm, and width of 8 cm and a mass of 112 g. What is the block’s density? (remember units!)
0.4 g/cm cubed
Physical Property or Chemical Property? Reactivity
Chemical
Jada and Brian are using a Venn diagram to organize the information they learned about solids, liquids, and gases. What should they write where all of the states overlap at position 7?
All particles are in motion
Describe what happens to the Kinetic Energy and Particle Motion when a gas condenses into a liquid.
Gas particles lose energy and can't fly around anymore. Instead they slide around.
Two objects have the same mass. One object is on Earth and the other object is on the Moon. Do the two objects have the same weight? Explain.
No! The Moon has less gravity, therefore it would weigh less on the Moon.
I have a toy car that has a mass of 140 g. When I measured the volume using water displacement, the water moved from 150 mL to 170 mL. What is the density of the car? (remember units!)
7 g/mL
Physical Property or Chemical Property? Melting Point
Physical