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Flashcards in Phy Sci chapter three study guide Deck (23):
0

An object's volume can be found by dividing its mass by its what?

Density

1

State Archimedes Principle

the buoyant force on an object in a fluid is an upward force equal to the weight of the fluid that the object displaces

2

State Pascal's Principle

A change in pressure at any point in an enclosed fluid will be transmitted equally to all parts of the fluid

3

What is the kinetic theory of matter?

Matter is made of particles that are in constant motion
The faster particles move, the higher the temperature of the substance
At the same temperature, more massive particles move more slowly than less massive ones

4

What is sublimation

The process in which a solid changes directly into a gas

5

When does evaporation occur?

When a liquid changes into a gas

6

State the law of conservation of mass

In chemical changes, as well as in physical changes, the total mass of the substances undergoing the change stays the same before and after the change

7

What is Boyle's Law
What does it relate
What is the formula

For a fixed amount of gas at a constant temperature, the volume of a gas increases as the gas's pressure decreases
It relates the pressure of a gas to its volume
P1V1 = P2V2

8

What is Gay-Lussac's law

The pressure of a gas increases as the temperature increases, if the volume of the gas does not change

9

What is buoyant force

The upward force that keeps an object immersed in or floating on a fluid

10

What occurs when the temperature of a fixed amount of gas at a constant volume increases

The pressure decreases

11

What occurs when the volume of a fixed amount of gas at constant temperate decreases

The gas's pressure increases

12

What is temperature?

A measure of how hot (or cold) something is; specifically, a measure of the average kinetic energy of the particles in an object

13

What is thermal energy

The total kinetic energy of a substance's atoms

14

State the law of conservation of energy

Energy may be changed to another form during a physical or chemical change, but the total amount of energy present before and after the change is the same

15

What happens when ice melts to form liquid?

Energy is required to melt it

16

What occurs when a substance changes from a liquid to a gas during evaporation?

The change of state requires energy

17

What occurs to particles of a substance when it condenses

The particles slow down and clump together

18

The ability of an object to float on a fluid is influenced by what 3 factors

Weight
Buoyant force
Density

19

What is viscosity

The resistance of a gas or liquid to flow

20

What relates to Charles's Law

Temperature to volume

21

What is the equation to Gay-Lussac's law

P1T1 = P2T2

22

What happens to a fixed sample of gas when it increases in volume

The temperature increases

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