1. One light goes out, they all go out correct ✅series

Voltage and current are directly related

wrong answers: no circuits and parallel

hint:More voltage from the battery pushes more current through.

resistance and current are directly related

wrong answers: all circuits and parallel

hint: If you have more resistance in a circuit, does the current go up? That's what would happen if they were directly related.

Voltage and resistance are unrelated

correct ✅all circuits

answer choices are series, parallel, all circuits, and no circuits

2.Which will make the electromagnet weaker?

correct Unwrapping some of the coils.

3.Why do gases exert more pressure or increase their volume when the temperature is raised?

correct At higher temperatures, the particles of a gas move faster. This increase in kinetic energy can increase the pressure and / or the volume of the gas.

hint: A few reminders of definitions from last semester:

Kinetic energy is the energy of motion.

Temperature is the average kinetic energy of the particles in a sample.

For a gas:

Temperature and pressure are directly related.

Temperature and volume are directly related.

Pressure and volume are inversely related.

4.Which group naturally achieves the octet rule without gaining or losing electrons?

correct Noble gases

5.Label each as a physical or chemical property/change.

Shiny -✅physical

electrolyte -✅physical

highly reactive -✅chemical

In the presence of oxygen, will form carbon dioxide and water -✅chemical

maellable -✅physical

rusts -✅chemical

acid rain erodes statues and monuments -✅chemical

6.Which statement is true about the groups on the periodic table?

correct The halogens have 7 valence electrons and form -1 ions.

7. Match the word to its definition.

the stuff that gets dissolved in a solution -✅solute

the stuff that does the dissolving in a solution -✅solvent

this determines the amplitude of a wave - ✅energy

the change in frequency of a wave as the object that is producing it moves towards or away from you -✅Doppler Effect

The material that a wave moves through-✅medium

Wave whose matter vibrates perpendicular to the direction the wave travels -✅ transverse

An atom of an element that has a specific number or neutrons, such as Carbon-14. -✅isotope

8.Check all true statements about the dog as it runs the obstacle course.

✅If the dog has the highest average speed, he will win the race.

✅A heavier dog will have a harder time changing direction on the course because it has more inertia than the small dog.

✅As the dog turns, his velocity changes as he changes direction.

( I got a 2.4 out of 4 on this questions, the other options were)

Whenever the dog speeds up, slows down, or changes direction, he is accelerating.

The dog's speed is constant throughout the race.

The weight of the dog will be the same if the competition was held on the moon.

If the doe can double his net force on an obstacle, his acceleration will be cut in half.

The mass of the dog will be the same if you take him to the international space station.

the wrong answer was❌The dog's velocity is constant throughout the race. because the speed and direction changed throughout, the velocity is not constant.

9.Match each atom with the correct element it represents. Make sure you are using your periodic table (Links to an external site.)
✅ Beryllium
✅ Lithium
✅ Helium
✅ Carbon
(image below is for question 9)