What is the Chemical Name for this Chemical Formula, AlF3
aluminum fluoride
You find some litmus paper . . . . what could you test with it?
the pH of an acid or base
True or False. Decreasing the amplitude of a sound wave will increased the sound's loudness. Why?
False. Decreased amplitude = Decreased loudness
An electromagnet's strength CAN be increased by changing the
size of the core.
number of coils used.
In which state are the particles moving the fastest?
gas
To write the formula for a binary ionic compound like sodium fluoride, you will
crisscross the charges down to become subscripts.
A solution contains hydroxide ions (OH-), tastes bitter, and has a pH of 8. What is it?
base
How can you make an object accelerate more?
exert more force OR lower the mass
BOTH
According to Ohm's Law , What happens to the current in a circuit if we decrease the voltage?
the current decreases as well
True or false
Colder temperatures = faster gas particles. Why?
False; slower
What type of bond occurs between a metal that loses its valence electrons and becomes (+) positively charged and a nonmetal that gains valence electrons and becomes (-) negatively charged?
ionic
You add sugar to your gatorade and shake it until no more will dissolve. This is a ____ solution
saturated
True or False. Two people use different simple machines (a ramp and a pulley) to lift the same mass to the same height. The work amount is the same and the mechanical advantages of the simple machines are the same.
Why? or Why not?
False. Each simple machine has a different Mechanical Advantage.
When a wave passes through an opening and spreads out
Diffraction
Chemical Properties or Physical Properties?
flammability, toxicity, acidity, reactivity
Chemical
Ionic or Covalent?
a. NaCl
b. CaCl2
c. CO2
d. MgO
e. H2O
a. Ionic
b. Ionic
c. Covalent
d. Ionic
e. Covalent
To increase the solubility of a solid in water . . .
Increase the Temperature; Heat it up
Increase the Surface Areas; make the solid particles smaller
Agitation; stir it, mix it, shake it
What changes when gravity changes when comparing the Earth and the Moon?
mass OR weight
WEIGHT
Which circuits will still work if one resistor breaks? Series or Parallel
Parallel
Which does not belong
Reactivity • Conductivity • Malleability • Density
Reactivity; all others are Physical Properties
Translate these Chemical Formulas into their Chemical Names
a. SO3
b. P2O5
c. N4O6
a. sulfur trioxide
b. diphosphorus pentoxide
c. tetranitrogen hexoxide
Identify the acids from this list of Acids and Bases:
a. HCl
b. HBr
c. NaOH
d. H2SO4
e. KOH
a. HCl
b. HBr
d. H2SO4
Madison wanted to attend the Super Bowl. Madison lives 500km away from the SoFi Stadium which is located in Inglewood, CA. If Madison drives an average speed of 100km/hr, how long did it take her to get to the game?
5 hours
True or False. Sound travels slowest in gases. Rank the following from fastest speed of sound to slowest speed of sound.
1. We see a bolt of lightning and later we hear the thunderclap. ⚡
2. A person is listening with his ear against the rail for an oncoming train. 🚉
3. Navy ships use sonar (sound wave navigation and ranging) to detect submarines. 🚢⚓
True.
2
3
1
Describe the movement of gas particles inside of a pressure cooker.
The temperature increase is causing the gas particles to move faster, which in turn make the pressure of the gas (air particles) increase.