Phase Change Graph and KMT

During a phase change what happens to temperature?

• it increases

• it decreases

• depends; if being heated it increases, if being cooled it decreases

• stays constant

All changes in the state of matter of a substance requires a change in 

• mass
• temperature
• permission
• energy

Tags

NGSS.HS-PS3-4

What line segment represents only the solid state?

• A-B
• B-C
• C-D
• D-E

Tags

NGSS.MS-PS1-4

A substance's heating curve is shown in the graph.  What is its boiling point?

• 100 C
• 60 C
• 80 C
• 20 C

Tags

NGSS.HS-PS3-4

In which region(s) of the graph does a phase change occur?

• Region 1, 3, & 5
• Region 2 & 4
• Region 1 only
• Region 1 & 2

Tags

NGSS.HS-PS3-4

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

Tags

NGSS.HS-PS3-4

In which region(s) of the graph would the substance only be in one phase?

• Region 1, 3, & 5
• Region 2 & 4
• Region 1 only
• Region 1 & 2

Given the heating curve of a solid being heated at a constant rate, what is the boiling point of this substance?

• 20°C

• 50°C

• 110°C

• 170°C

Tags

NGSS.HS-PS1-2

NGSS.HS-PS3-4

Which of these is the dependent variable?

• x-axis

• y-axis

On a graph, which axis shows the independent variable?

• x-axis

• y-axis