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Chemistry
Chemistry 2
Magnetism
Electricity
Work and Energy
100
What type of reaction is shown? A + B --> AB
Synthesis reaction
100
Name correctly this compound: MgCl2
Magnesium Chloride
100
A device that increases or decreases voltage in a power line is called a __________.
Transformer
100
According to Ohm’s law, as the resistance in a circuit _______, the current _______.
increases, decreases
100
Green plants convert light energy from the sun into _____.
Chemical Potential Energy
200
What type of reaction is shown? AB --> A + B
Decomposition reaction
200
Name correctly the following compound: FeSO4
Iron (II) Sulfate
200
The region around a magnet where the magnetic forces act is the _________.
Magnetic Field
200
In which type of circuit are there two or more branches for current to move through?
Parallel Circuit
200
At what point on a roller coaster is the gravitational potential energy (GPE) the lowest?
At the lowest point of the roller coaster.
300
_____ KBr + _____ F2 →_____ KF + _____ Br2 What type of reaction is this?
Single replacement reaction
300
Name correctly the following compound: N3O7
Trinitrogen Heptaoxide
300
The function of an electric motor is to _______.
To change electrical energy to mechanical energy
300
What is the standard voltage difference of electrical energy entering homes in the United States and Mexico?
120v
300
At the very top of a roller coaster (110m), a cart with a mass of 200kg has how much kinetic energy? Potential?
KE = none! PE = 215,600J
400
Balance the following reaction: Na2SO4 + Pb(NO3)2 → NaNO3 + PbSO4
Na2SO4 + Pb(NO3)2 → 2NaNO3 + PbSO4
400
Name correctly the following acid: HNO2
Nitrous Acid
400
The function of a generator is to ___________.
To change mechanical energy to electrical energy
400
What is the current in a circuit if the voltage difference is 22V and the resistance is 15 Ω? (Round correctly to 2 decimals)
1.47amps
400
How high should an object be placed to obtain 33,750 joules of energy, if the object’s mass is 60kg?
57.40m
500
State the type of reaction and balance: C2H6 + O2 → CO2 + H2O
Combustion Reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
500
Identify as ionic or covalent: NaCl N2O5 MgSO4 C3H8
NaCl - Ionic N2O5 - Covalent MgSO4 - Ionic C3H8 - Covalent
500
A transformer steps down the power line voltage (10,800 volts) to standard household voltage (120 volts). If the primary coil has 3,750 turns, how many turns must the secondary coil have? (Round to the nearest whole number)
42 turns
500
How much electrical energy is used by an appliance that draws 12 A of current at a voltage difference of 200 V for 3h?
7.2 kWh
500
A pulley is used to raise a heavy crate. The pulley is such that an input force of 223 N is needed to provide an output force of 1784 N. What is the mechanical advantage of this pulley?
MA = 8