Spring Benchmark Review

A student is trying to classify an unidentified, solid gray material as a metal or a nonmetal. Which question will best help the student classify the material?

• Is the material malleable or ductile?

• Does the material feel hard to the touch?

• Will the material float in water?

• Does the material feel rough or smooth?

The picture shows a bicyclist increasing speed while riding down a hill during a bicycle race. Which statements accurately describe the potential and kinetic energy of this bicyclist? Select TWO correct answers.

• Kinetic energy increases.

• Kinetic energy decreases.

• Potential energy decreases.

• Kinetic energy remains constant.

• Potential energy remains constant.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

If the students continue at the same speed, which statement describes the total distance traveled after 90 seconds?

• Student 1 traveled 40 m, and student 2 traveled 20 m.

• Student 1 traveled 50 m, and student 2 traveled 30 m.

• Student 1 traveled 60 m, and student 2 traveled 30 m.

• Student 1 traveled 70 m, and student 2 traveled 25 m.

The speed of an object over time is shown in the graph. Which table describes the object's motion?

• The object's speed is increasing, the object's speed is constant, the object's speed is decreasing.

• The object is moving in a positive direction, the object is at rest, the object is moving in a negative direction.

• The object's speed is increasing, the object is at rest, the object's speed is decreasing.

• The object is moving at a constant speed, the object is at rest, the object is moving at a constant speed.

Tags

NGSS.MS-PS3-1

The diagram shows how a cylinder in a car engine causes the car to move. Which description of the energy conversions in this process is correct?

• The chemical energy in the fuel-air mixture is converted to thermal energy, which is then converted to mechanical energy.

• The mechanical energy in the fuel-air mixture is converted to electrical energy, which is then converted to thermal energy.

• The electrical energy in the fuel-air mixture is converted to mechanical energy, which is then converted to thermal energy.

• The thermal energy in the fuel-air mixture is converted to electrical energy, which is then converted to mechanical energy.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

NGSS.HS-PS3-3

If a fluorine atom has a mass number of 19, how many neutrons are in the atom? Enter your answer in the box provided.

Sodium and lithium have similar chemical properties. What characteristic of these elements explains why they are chemically similar?

• Their atoms both have one valence electron.

• Their atoms both have more neutrons than protons.

• Their atoms have the same number of energy levels.

• Their atoms contain equal numbers of protons and electrons.

Which element has the same number of energy levels as lithium?

• Beryllium

• Sodium

• Magnesium

• Potassium

Which element has chemical properties that are most similar to the chemical properties of sulfur, S?

• Silicon, Si

• Chlorine, Cl

• Selenium, Se

• Phosphorus, P

Students performed a lab investigation on chemical reactions. The students put on goggles and plastic gloves and then followed these steps: 1. Pour 150 milliliters of vinegar into a beaker. 2. Place a thermometer in the vinegar and record measurements. 3. Add a piece of steel wool to the beaker. 4. Observe and record thermometer measurements. 5. Remove the steel wool from the beaker. 6. Use tweezers to pull strands of the steel wool apart and observe changes. Which observation would indicate that a chemical reaction occurred?

• The vinegar took the shape of the container in step 1.

• The steel wool sank into the vinegar in step 3.

• The temperature of the vinegar increased during step 4.

• The steel wool changed shape during step 6.

Tags

NGSS.MS-PS1-2