Show:
matter
phase changes
element, compounds, mixtures, solutions
physical and Chemical Changes
More Matter
100
What is matter? (your answer should include the two things that make up mater)
1) anything that has mass and volume
100
Explain melting- 1) phase change 2) does energy increase or decrease 3) is heat applied or revmoved
melting 1) solid-liguid 2) energy increase 3) heat applied
100
What is an element? Give an example
substance in its purest form example- varies
100
What is a physical change? Give two specific examples of a physical change.
A change in which nothing new is produced. ripping paper, melting ice
100
What is viscosity?
a fluid's resistance to flow (how fast or slow a fluid flows)
200
What is mass?
the amount of matter in an object
200
Explain freezing- 1) phase change 2) does energy increase or decrease 3) is heat applied or removed 4) example
1) liquid-solid 2) energy decrease 3) heat removed 4) liquid water to ice cube
200
what is a compound? Give an example
Two or more elements chemically combined. Water, salt
200
What is a chemical change. Give two examples of a chemical change?
Something new is produced. Answers vary
200
Give an example of a substance with low viscosity- high viscosity
low viscosity- water high viscosity- honey
300
What is volume?
the amount of space an object takes up
300
Explain evaporation- 1) phase change 2) does energy increase or decrease 3) is heat applied or removed 4) example
1) liquid to gas 2) energy increase 3) heat applied 4) boiling water
300
What is a mixture?
2 or more substances mixed together ex) varies
300
What are 3 indicators for a chemical change?
color change, odor, something new formed, bubbles, fizz
300
What are the two types of solids?
1) crystalline solid 2) amorphous solid
400
What is the kinetic theory of matter?
Tiny particles in motion make up all matter.
400
Explain condenstation- 1) phase change 2) does energy increase or decrease 3) is heat applied or removed 4) example
1) gas to liquid 2) energy decreases 3) heat is removed 4) liquid drops on a mirror from shower steam
400
What is a solution?
When something dissolves in another. Example) salt water
400
Explain what happens when you mix baking soda and vinegar and what is produced.
A chemical reaction occurs. Carbon Dioxide gas is prodcued.
400
What is an amorphous solid? give an example of one
a solid that does not have a distinct crystal patter. glass, rubber, plastic
500
What are the three main phases of matter? For each one - describe properties (shape and volume) - energy level- - describe the way the particles move
solid (definite volume, definite shape, low energy, vibrate against each other. liquid (definite volume, no definite shape, moderate energy, particles slide past each other gas (no definite volume, no definite shape, high energy, particles bounce off each other and the walls)
500
What is sublimation? Give an example What is deposition? Give example
1) solid to gas (dry ice) 2) gas to solid (frost)
500
What is a solute? Give an example What is a solvent? Give an example
Solute: Substance that gets dissolved (salt) Solvent (substance that does dissolving)
500
Give 5 examples of a chemical change Give 5 examples of a physical change
Answers vary
500
What is a crystalline solid? give an example of one
A solid that has a distinct particle arrangement sand, snow, salt