States of Matter
Kinetic and Particle Model
Fluids and Density
Changes of State
Miscellaneous
100
What is matter?
Matter is anything that has mass and volume.
100
True or False - If you heat up an object, the particles move closer together.
False - The particles move farther apart and expand.
100
What is a fluid?
A fluid is any form of matter that can flow.
100
What is melting?
Melting is the change of state from solid to liquid form.
100
What is the difference between heat and temperature?
Heat is the energy transferred from one material or object to another as a result of a difference in temperature or a change in state. Temperature is a measure of the average kinetic energy of the particles in a substance.
200
What is a solid?
A solid is the state of matter that has a definite shape and volume.
200
What is a model?
A way to think about and interpret natural events and objects.
200
What is density?
Density is the mass of a given volume, or how closely packed together the particles are in a material.
200
What is the change of state from solid to gas called?
Sublimation.
200
Why must highways and bridges be built with gaps?
When the pavement is heated, it causes it to expand due to thermal expansion.
300
What is the difference between mass and volume?
Mass is the quantity of matter that a substance or object contains. Volume is the amount of space taken up by a substance or object.
300
What happens to particles when they are heated?
The particles move faster, spread farther apart, and expands, or increases in volume. (Thermal expansion)
300
What is the formula for density?
Density = Mass ÷ Volume (D=m÷v)
300
What is the opposite of sublimation?
Deposition.
300
What is thermal contraction?
Thermal contraction happens when temperature of matter decreases. The particles slow down, lose energy, and decrease in volume.
400
What is the difference between a liquid and gas?
A liquid has a definite volume, but its shape is determined by its surroundings. A gas has its volume and shape determined by its surroundings.
400
What makes particles move, according to the kinetic molecular theory?
Energy.
400
What is displacement?
Displacement is the amount of space that an object takes up when placed in a fluid. By measuring the displacement of an object, you can measure the volume of the object.
400
What is a melting point, and what is a boiling point?
A melting point is the temperature at which a solid turns to liquid. A boiling point is the temperature at which a liquid turns to gas.
400
In "everyday terminology", what is density?
Crowdedness.
500
Give two units of measure for mass and two units of measure for volume.
Mass is usually measured in grams (g) or kilograms (kg). Volume is usually measured in millilitres (mL), litres (L), or cubic centimetres (cm).
500
What is kinetic energy and how does it relate to the kinetic molecular theory?
Kinetic energy is the energy of motion. The kinetic molecular theory explains what happens to matter when the kinetic energy of particles changes.
500
Why is it harder to breathe as you increase in altitude?
Air particles are relatively dense close to Earth's surface. As you increase in altitude, the air becomes less dense. Because the air particles are spread out, it is harder to get enough oxygen in every breath.
500
What is the difference between evaporation and sublimation?
Evaporation is the change of state from liquid to gas. Sublimation is the change of state from solid directly to gas.
500
Describe the particles of a solid, liquid, and gas.
1) Particles of a solid are packed together tightly and can only vibrate. The spaces between particles are very small. 2) Particles of a liquid are farther apart and can slide past each other. It takes the shape of its container. 3) Particles of a gas are very far apart and can move around quickly.
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