NaCl is the formula for common table salt. Why is this considered a compound?
Made of more than one element
100
What is a lightyear?
The distance that light can travel in 1 year.
100
If one lightbulb in your house burns out, why do the rest of the lights stay on?
Houses are wired in parallel, so a broken load on one pathway will not affect the loads on another pathway.
100
Draw a complete Bohr Rutherford diagram of a Phosphorus atom
Refer to board
100
What makes an object have a positive charge?
Fewer negative charges than positive charges
200
If a burning splint is placed in a test tube, and the splint re-ignites, what gas is most likely present in the tube?
oxygen
200
What does an ellipse with an eccentricity of 0 look like? An eccentricity of 1?
A circle and a flat line
200
Explain the difference between current and voltage
Current measures the amount of charge flowing through a circuit in a unit of time.
Voltage is the amount of electrical energy that each charge carries through the circuit
200
Draw The Hertzprung Russel diagram with the following labels: Main Sequence, Blue Giants, Red Giants, Red SuperGiants, Blue Supergiants, White Dwarf, Red Dwarf
As well as the horizontal and vertical axes.
Refer to board
200
Give the chemical symbol for sodium flouride
NaF
300
Why is it difficult to get a noble gas to react with another element?
Noble gases have full valence shells and don't want to lose/gain/share electrons
300
Explain the difference between a comet and an asteroid
Comets are made of ice, asteroids are made of rock
300
A stereo, with a resistance of 10 ohms, is plugged into a 120 V outlet. What is the current flowing through the stereo?
12 A
300
Draw the diagrams of a total solar and total lunar eclipse. Include the lines that show the shadows, label the umbra and penumbra, label the moon
Refer to board
300
Give an example of a quantitative and qualitative observation
400
Explain what an ionic compound is and give an example
Ionic compounds occur when one element loses electrons (becoming +) and another gains electrons (becoming -). These two ions are then attracted to each other and bond. NaCl is an ionic compound
400
List these layers of the sun in order, from inner-most to outer-most:
chromosphere, core, photosphere, corona, radiative layer
What happens to current when it goes from a series pathway to a parallel pathway?
Current will split amongst each of the pathways
400
Label the circuit diagram
Refer to board
400
What is the difference between grounding and charging by grounding?
Grounding will make a charged object neutral. Charging by grounding will make a neutral object charged but will not charge by conduction with a charged object.
500
Oxygen has atomic number 8 and an atomic mass of 16. Give the number of protons, electrons, neutrons.
8 protons, 8 electrons, 8 neutrons
500
What phase must the moon be in for you to see a solar eclipse? Lunar eclipse?
Where must you be standing to see a full eclipse? Partial eclipse?
New moon, full moon.
Umbra, penumbra
500
Solve the circuit
On the board
500
Draw a Lewis dot diagram of lithium and fluorine. Show how the elements combine to give lithium floride
Refer to board
500
Explain red-shifting
Red-shifting is an effect of light. As an object moves towards us, the light emitted looks more blue, but an object moving away from us will look more red.