Lab 2 - Matter and Phase Changes || A+ RATED
1) Ethanol, like any material in this universe, is matter. Which of these is NOT matter? - Correct Answer
Light
2) Explosions! which part of the explosion event is NOT considered a chemical change? - Correct Answer
Carbon dioxide expands
3) Your mission to get a high concentration of Ethanol from Ethanol 20% (v/v) What type of matter is
Ethanol? - Correct Answer Homogenous mixture
4) What kind of phase change is happening to these particles? - Correct Answer Sublimation
5) Next one, what kind of phase change is happening to these particles? - Correct Answer Deposition
6) last one, what kind of phase change is happening to these particles ? - Correct Answer Condensation
Graph A is the correct graph - Correct Answer If wrong graph is picked, the answer is " it shows a
continuous increase in temp"
Why does the temperature remain constant during the phase change? - Correct Answer The heat is
used to convert the states of matter
You may have noticed that the slope in the ice segment is steeper than the water segment. Why is that?
- Correct Answer More heat is required to raise the temperature of the water
From the heating curve, we can deduce the melting point and boiling point. What is the melting point of
Ethanol ? - Correct Answer -115 *C
Which phase is easiest to heat? - Correct Answer Solid metal
1) Ethanol, like any material in this universe, is matter. Which of these is NOT matter? - Correct Answer
Light
2) Explosions! which part of the explosion event is NOT considered a chemical change? - Correct Answer
Carbon dioxide expands
3) Your mission to get a high concentration of Ethanol from Ethanol 20% (v/v) What type of matter is
Ethanol? - Correct Answer Homogenous mixture
4) What kind of phase change is happening to these particles? - Correct Answer Sublimation
5) Next one, what kind of phase change is happening to these particles? - Correct Answer Deposition
6) last one, what kind of phase change is happening to these particles ? - Correct Answer Condensation
Graph A is the correct graph - Correct Answer If wrong graph is picked, the answer is " it shows a
continuous increase in temp"
Why does the temperature remain constant during the phase change? - Correct Answer The heat is
used to convert the states of matter
You may have noticed that the slope in the ice segment is steeper than the water segment. Why is that?
- Correct Answer More heat is required to raise the temperature of the water
From the heating curve, we can deduce the melting point and boiling point. What is the melting point of
Ethanol ? - Correct Answer -115 *C
Which phase is easiest to heat? - Correct Answer Solid metal
