temperature and heat

Question 1

4 categories that classify matter

Answer 1

solid: keep its shape
liquid: flows. higher density than gas
gas: flows. form shape of container
plasma: gaseous property. conduct electrictiy

Question 2

chemical elements

Answer 2

compound of atoms. atom is not indivisible

Question 3

can gases bond together

Answer 3

they are too weak to bond

Question 4

bernoulli’s principle

Answer 4

fluid must flow faster in the narrow section for same amount of mass to pass through cross section. his equation is consequence of conservation of energy

Question 5

zero’th lay of thermodynamics

Answer 5

if 2 objects A and B are thermal equilibrium with object C, then A and B are thermal equilibrium with eachother.

Question 6

temperature

Answer 6

measured in fahrenheit, celsius and kelvin
rapid moving molecules= high temp
slow moving molecules=low temp

Question 7

temperature scale

Answer 7

kelvin and celsius only goes up. all research uses kelvin scale

Question 8

are heat and temperature the same? why?

Answer 8

it is not the same because heat is flow of thermal energy while temperature is average kinetic energy

Question 9

which is harder to heat

Answer 9

WATER

Question 10

heat transfer

Answer 10

convection: hot goes up when dense goes down. like wind
conduction: flame in contact with hot pan

Question 11

examples of heat transfer

Answer 11

conduction, convection and radiation

Question 12

first law of thermodynamics

Answer 12

conservation of energy. different kinds of energy are interchangable. system can change but not total amount

Question 13

second law of thermodynamics

Answer 13

heat flow from hot to cold object but WON’T flow from cold to hot