Physical Science Final - Jeopardy 2

Balancing Equations

200

What is the overall "formula" for a neutralization reaction?

acid + base --> salt + water

400

Hydrogen gas (H2) and oxygen gas (O2) yield water

2H2 + O2 --> 2H2O

600

Sodium and chlorine gas (Cl2) yield sodium chloride

2Na + Cl2 --> 2NaCl

800

Magnesium oxide yields magnesium and and oxygen gas (O2)

2MgO --> 2Mg + O2

1000

Classify the following reaction:

CH4 + 2O2 --> CO2 + 2H2O

Combustion reaction

Chapter 7

200

What is a solvent?

The larger part of a solution, or the part that dissolves the solute

400

5 g of a solute is dissolved in 50 g of solution. What is the concentration?

10% solute concentration

600

What ions does a base form?

OH- (hydroxide) and a positive ion

800

How does a substance with a pH of 4 compare to a substance with a pH of 6?

It is more acidic, so it has a higher concentration of H+ ions and a lower concentration of OH- ions.

1000

Predict the products for the following neutralization reaction:

HBr + KOH → KBr + H2O

KBr + H2O

Chapter 8

200

How many valence electrons does carbon have?

4

400

List the 3 ways that carbon can arrange itself and draw an example of each.

Straight chain, branched chain, and ring structure

600

What's the difference between saturated and unsaturated fats?

Saturated fats only have single bonds, while unsaturated fats have at least one double or triple bond in them. Unsaturated fats are usually considered healthier than saturated fats.

800

List 3 properties of organic compounds.

Have carbon and hydrogen in them, flammable, have covalent bonds, poor conductors of electricity, low melting points and boiling points, insoluble in water

1000

How does our reliance on synthetic polymers and composites contribute to climate change?

Synthetic polymers and composites are very cheap to make, so we make a lot of them and throw them away rather than reusing or fixing them. They also take a lot of electricity, water, and other resources to produce. They also take many, many years to decompose (if they ever do), so we have too much trash on the planet. They also break apart into small bits that can get into the ocean, air, and land and disrupt ecosystems.

Chapter 9

200

What are the metric system prefixes from largest to smallest?

King Henry Died By Drinking Chocolate Milk

Kilo, Hecto, Deka, Base, deci, centi, milli

400

What is speed?

Distance / time

600

What are the 3 types of acceleration?

Speeding up, slowing down, changing direction

800

A train’s acceleration is clocked at 10 m/s/s, and its speed is clocked at 60 m/s. If the train started from rest and its acceleration has been constant, how long has it been chugging along?

6 seconds

1000

What does the slope of a distance vs. time graph represent?

Speed!

Chapter 10

200

What are the standard units of force?

Newtons

400

What's the difference between balanced and unbalanced forces?

Balanced forces = there is no net force

Unbalanced force = one force is larger than the other (or there is only one force with no opposing force), which leads to a net force

600

What are the 4 types of friction? Give an example of each.

Static friction. Example: using extra effort to get something going from rest

Sliding friction. Example: rubbing your hands together to warm up

Rolling friction. Example: Wheels of a skateboard on pavement

Fluid friction. Example: Surfboard in water (or air resistance)

800

What is the Law of Universal Gravitation?

Without exception, every object in the universe is attracted to each other and exerts a gravitational force on each other.

1000

What are Newton's 3 Laws?

First Law: Objects in motion will stay in motion and objects at rest will stay at rest unless acted upon by an outside force.

Second Law: Acceleration depends on force and mass.

Third Law: For every action there is an equal but opposite reaction.