Thermal vs. Phase
Categories of Matter and random
Density and mass
Conservation of mass
Electricity
Waves and magnetism
100
In which region(s) of the graph is the thermal energy staying the same?
Region A and C
100
The simplest type of matter that cannot be broken apart using physical or chemical means.
An Element
100
What is the molar mass of H2O?
18 g/mol
100
What do you call H2 and O2 in this unbalanced equation?
H2 + O2 --> H2O
The reactants.
100
Lightning is an example of ________ electricity.
Induction
100
Atoms within materials that are aligned in magnetic substances
Domains.
200
In which region(s) is the phase energy increasing?
Region A and C
200
Can only be separated by chemical means, such as electrolysis.
Compounds
200
What is the density for metal A (the lower line)?
5.6 g/cm3
200
What do you called the small "2's" in this unbalanced equation?
H2 + O2 --> H2O
Subscripts.
200
If you have a 10 ohm light bulb with a 2 amp current running through, what voltage is being supplied?
20 volts.
200
Name of the device that changes the amount of voltage supplied
A transformer.
300
Which region in the graph is the energy being absorbed increasing the distance between the water particles and increasing their phase energy?
A and C
300
The composition of this substance is variable and it can be separated using physical means.
Mixture
300
I metal A's density is 5.6 g/ml, what is its mass, if the volume is 10 ml?
56 g
300
What should the coefficient in front of hydrogen in this equation be:
H2 + O2 --> H2O
2
300
The statement that current is equal to the voltage difference divided by the resistance is known as____.
Ohm's Law
300
If a sound is moving toward you, the frequency is heard by the observer as __________ than normal.
Higher.
400
Which region is the energy increasing the velocity of the water particles?
Region B
400
What is inside a bubble of boiling water?
Particle of water as a gas.
400
How many atoms are represented by this formula?
Al2(SO4)3
17
400
What is ultimately getting balanced when you balance an equation?
The atoms
400
If what subatomic particles are attracted to each other and why?
A proton and an electron, because they have opposite charges.
400
The color and EM wave that has the longest wavelength. (2 answers).
Red and radio
500
When a sample of liquid is freezing, what is happening to the thermal energy?
It stays the same
500
If 12 grams of water rises 12 degrees Celsius when a snack food is combusted, how many calories does the food have?
144 calories (0.144 Calories).
500
What is the molar mass of CuSO4
160
500
In this type of reaction, more energy is put into the reaction than is produced, and the solution might get cooler.
Endothermic
500
What kind of circuit would a house be wired with and why?
Parallel, because each light or appliance can be turned off separately.
500
If the speed of a wave is 300,000,000 m/s and the wavelength is 300,000 meters, what is the frequency?
1000 Hz