NEW
Font size
WorksheetsUNIT 1 ENERGY
Total questions: 50
Worksheet time: 58mins
This measures the average kinetic energy of molecules
temperature
heat
Kevin
Carbon dioxice
Device used to measure temperature
thermometer
electronic balance
pH meter
graduated cylinder
Observe the diagram. Which statement is true about the kinetic energy of the molecules in the containers?
The molecules are moving faster in Diagram A
The molecules are moving slower in Diagram A
The molecules are moving at the same rate in both diagrams
Heat loss causes matter to ________. Heat gain causes matter to ________.
contract ; expand
expand ; contract
stay ; change
change ; stay
Radiation
Curling Iron
Conduction
Convection
Radiation
Sun Bathing
Conduction
Convection
Radiation
Which of the following is an example of an endothermic process or reaction?
condensing
freezing
combustion
melting
Which of the following is an example of an exothermic process or reaction?
melting
boiling
photosynthesis
freezing
What type of system is this/
open
closed
isolated
What type of system is this
open
closed
isolated
what type of system is this
open
closed
isolated
the exchange of mass and energy is what type of system?
open
closed
isolated
The exchange of energy but not mass is what type of system
open
closed
isolated
What is the phase change of a solid to a liquid?
freezing
melting
boiling
condensation
What is it called when a solid turns directly into a gas?
All phase changes (changing states) requires energy to be added or taken away.
Change from Liquid to Solid is called ...
fusion
Freezing
sublimation
evaporation
Change from liquid to gas is called....
expansion
evaporation
condensation
sublimation
What happens along the AC line?
Melting/Freezing
Boiling/Condensing
Boiling/melting
freezing/condensing
What is the normal boiling point?
0 οC
< 0 οC
100 οC
> 100 οC
Describe the substance at letter A.
Solid
Liquid
Melting
Evaporating
- 105 J
- 10.5 J
- 1.05 J
- 50 J
How much energy is required to completely boil away 150g water?
If a 8.50g ice cube at -10.0o C sits out on the counter, completely melts, and then warms to room temperature (25.0 o C) how much energy did the ice cube absorb?
177 J
1070 J
888 J
3905 J
Which of the following best explains why the sand at the beach is hotter than the water?
Sand has a higher specific heat than water.
Sand has a lower specific heat than water.
There is more water than sand at the beach.
There is more sand than water at the beach.
Calculate the standard enthalpy change for the combustion of methane.
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l)
-891 kJ
-605 kJ
605 kJ
891 kJ
Mechanical energy is...
Energy produced by a machine or moving part
Energy produced from vibration that you can hear
Energy that can be seen by the eye
Energy that causes a change in temperature between materials
Thermal energy is...
Energy produced by a power source
Energy that causes a change in temperature between materials
Energy produced by a machine or moving part
What is needed to do work
________ is what is needed to do work
Electrical energy
Sound Energy
Energy
Mechanical energy
Energy produced from vibration that you can hear is...
Electrical energy
Light energy
Sound energy
Energy
Which of the following choices represent the three components of a battery?
Anode, electrons, and wires
protons, electrons, and neutrons
Anode, cathode, and electrolyte
AC, DC, and Electrons
How many chemical reactions take place in a typical battery?
1
2
3
4
What is the function of a switch in an electric circuit?
It stops the flow of electrons when its open
It slows down the electrons
It speeds up the electrons
It stops the flow of electrons when its closed
Batteries are devices that store ___________ energy and convert it to ____________ energy.
mechanical, chemical
electrical, chemical
chemical, electrical
radiant,electrical
Batteries have 3 parts; ______, _______ and ________
chemicals, electricity and light
cathode, anode, electrolyte
metal, radiant energy and plastic
static, dynamic and electron
________ build up to create a potential difference in batteries
neutrons
protons
electrons
chemicals
True or False:
The electrons in the anode are attracted to the protons in the cathode
True
False
____________ is the flow of electrons.
mechanical
chemical
radiant
electricity
What causes batteries to work?
chemical reaction
radiation
water flowing
electrolytes
________ is the pressure from an electrical circuit's power source that pushes electrons through.
electrolyte
power
electricity
voltage
