Show:
Solid, Liquid, Gas
Phases of Matter
Grab Bag
Graphs and Charts
100
What state of matter is characterized by vibrating molecules with strong attraction?
Solid
100
A change in state in which energy is added is called
an endothermic change:
100
What is the opposite of melting?
Freezing
100
What is the boiling point of the mystery substance?
80 degrees celcius
200
Matter in liquid form has _____________ volume and _______________ shape.
Fixed Changeable
200
What is the change of state from a gas to a liquid called?
condensation
200
Which of the following is not an example of condensation? a. beads of water on a plant's leaf b. beads of sweat on Mr. Brunt's forehead after a big day in PE c. the "fog" on a mirror after a shower d. Water vapor in the air gets cold and turns into clouds
b. beads of sweat on Mr. Brunt's forehead after a big day in PE
200
What is the melting point of the mystery substance?
20 degrees Celcius
300
What is a crystalline solid? Describe in 8 words or less.
has particles arranged in a pattern.
300
What happens to the temperature of an ice cube as it melts?
It stays constant until the change of state is complete.
300
What is the melting point of water?
0 degrees celcius
300
What state is present at 30 degrees Celcius?
liquid
400
Ms. Boyle heated the maple syrup to pour over her pancakes. Explain what happens to the syrup as it is heated, including the word "viscosity".
Heating the syrup lessens the viscosity of the liquid, allowing it to flow more quickly.
400
Mr. Lindbloom said: "I have some dry ice, but I am afraid it will melt if I leave it in the sun." What is wrong in his thinking?
Dry Ice is solid CO2. It does not have a liquid phase. It SUBLIMES directly from solid to gas.
400
Ms. Manning added some warm water to her tea when it got too cool. This is an example of adding energy to a substance. Is it also a change of state? Briefly explain.
Ms. Manning has increased the TEMPERATURE of her tea but not the STATE - it is still a liquid.
400
What is our mystery substance? a. Lindbloomium - boiling point 20 degrees C, melting point 80 degrees C b. Wiebium - boiling point 80 degrees C, melting point 20 degrees C c. Thielium - boiling point 80 degrees C, melting point 20 degrees C d. Boylium - boiling point 100 degrees C, melting point 0 degrees C
C. Thielium