Solids Liquids And Gases

Question 1

What is density

Answer 1

How much mass is in a given volume

Question 2

How would you measure volume

Answer 2

• Graduated cylinder (liquids; irregular solid)
• Eureka Can (irregular solid)
• Ruler (regular solid)

Question 3

What is precision

Answer 3

Smallest scale equipment can measure

Question 4

What is parallax error

Answer 4

Error in reading a scale due to position of eye.

Question 5

Why does nail exert more pressure on wood than on hammer

Answer 5

• pressure is force divided by area
• forces on wood and hammer are equal
• smaller area of nail is in contact with wood

Question 6

Pressure at a depth

Answer 6

Pressure is caused by the weight of fluid above it

Question 7

Takes energy to change state so

Answer 7

Breaking intermolecular bonds

• No temperature change

Question 8

The pressure law

What happened to pressure when temperature goes up

Answer 8

As Temperature goes up,
• Kinetic Energy goes up,
• So, impact Force of particles on wall goes up,
• So, Pressure goes up.

Question 9

Boyles Law

Answer 9

Pressure is inversely proportional to Volume

Question 10

Why is pressure inversely proportional to volume

Answer 10

As volume increases
2. Space/Distance between particles increases
3. Frequency of collisions (Number of collisions
per second) decreases
4. Average force felt by container decreases
5. So, pressure decreases