Midterm Practice Test (Chemistry)

A dog chases a tennis ball 0.925 km. How far in meters did the dog chase the ball? [Unit 1]

• 9.25 m

• 92.5 m

• 925 m

• 925,000 m

A metal sample has a mass of 45.65g. The volume of the sample is 16.9 mL. What is the density of the sample? [Unit 1]

• 2.7 g/mL

• 27 g/mL

• 0.37 g/mL

• 3.7 g/mL

What is 3,200,000 in scientific notation? [Unit 1]

• 3.2 x 10⁵

• 3.2 x 10⁷

• 3.2 x 10⁶

• 3.2 x 10^-6

On the graph, what is the dependent variable? [Unit 1]

• Materials

• Density comparison

• Lead

• Density

Calculate the number of liters in 435 mL. [Unit 1]

• 0.435 L

• 4.35 L

• 43.5 L

• 4350 L

We are completing a lab and need to know the temperature and density (which requires us to know mass and volume) of a substance. Which of the following equipment should we use? [Unit 1]

• Graduated cylinder and watch glass

• Beaker and balance

• Beaker and ring stand

• Graduated cylinder and balance

Isabella is performing an experiment in her chemistry class and is looking at the density of different materials. She measures the mass and volume of each material in the table and calculates the density using the formula: density = mass / volume. There is a table and graph of the results from her experiment. What could be a possible hypothesis for this experiment? [Unit 1]

• Material with a higher mass will have a larger density.

• What is density?

• The density of wood is more than iron.

• The mass of various materials determines density.

Tags

NGSS.MS-PS1-2

Which piece of equipment would be used to complete the following task: weighing out 100 grams of sodium chloride? [Unit 1]

• Balance

• Graduated cylinder

• Funnel

• Thermometer

How would you describe the accuracy and precision of the following situation: a student measured the mass of a 1.43 g sample four times, recording masses as 3.00 g, 3.05 g, 3.05 g, and 3.00 g. The average of the trials is 3.03 g. [Unit 1]

• Poor precision, poor accuracy

• Good precision, poor accuracy

• Good precision, good accuracy

• Poor precision, good accuracy

How many significant figures are in 0.380? [Unit 1]

• 1

• 2

• 3

• 4