Show:
Vocabulary
Liquids
Solids
Gas
Experimentation
100
The smallest unit that defines a chemical element.
What is an atom?
100
These stay together and don't break apart easily.
What are water molecules?
100
When you hear a sample of a solid, the particles that make up the solid...
What is move faster?
100
Steam is a form of this.
What is a gas?
100
In science, we always start with one of these.
What is a question.
200
The study of matter and what matter does.
What is chemistry?
200
Food coloring spreads out faster in...
What is hot water?
200
The particles of these, are attracted to each other, vibrate in motion but do not move past one another, and have mass.
What are solids?
200
This happens because the attractions in a gas are too weak to bring the molecules together.
Why do molecules of gas move about so freely?
200
If we placed an alcohol thermometer and a mercury thermometer into the same glass of hot water, the ___________ thermometer would rise at a faster rate.
What is the alcohol thermometer?
300
This takes three basic forms: solid, liquid, and gas.
What is matter?
300
Water molecules are always ____________ to one another?
What is attracted?
300
If I took a solid brass ball and heated it up the size of the ball would...
What is increase?
300
True or False? Gas molecules will spread out evenly to fill any container?
What is true?
300
When a water bottle dipped in soapy water is placed in a cup of hot water, the soap will become __________.
What is convex?
400
Anything that has mass and takes up space.
What is matter?
400
When a thermometer is heated, the red liquid inside the thermometer moves up because it...
What is expands?
400
Give three examples of a solid.
What are ____________, ____________, and ____________?
400
Gas molecules will __________ and move freely past one another.
What is vibrate?
400
The balloon will weigh more.
When it is filled with air.
500
A group of two or more atoms that stick together.
What is a molecule?
500
Explain the difference between cold and hot temperature water, on a molecular level.
Cold water molecules move at a slower rate reducing the strain on their attractions, making them closer together. Hot water moves at a faster rate depending on the temperature of the water, causing strain on their attractions, expanding the size of each molecule.
500
True or False? All solids will loose their shape when heated?
What is true?
500
Does gas have mass? How do you know? Explain in molecular terms citing an experiment done in class.
Student should cite the ball, can of compressed air, or soapy water bottle.
500
Explain the phenomena of ice to water to steam, in molecular terms.
When water is cooled to a freezing point, the molecules slow down in such a way that they are highly attracted to one another and can no longer move past one another. As the molecules are heated, the attractions are slowly weakened to where they expand and become fluid in motion. Finally, once water becomes heated to such a point, the molecules are moving so fast that the attractions are too weak to bind together and move freely around and past one another.