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Week 2 quiz

Authored by Science Sandbox

Chemistry

8th Grade

Used 1+ times

Week 2 quiz
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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A chemist performs five trials to measure the boiling point of a liquid. The accepted boiling point is 78.5°C. The data collected is: 79.8°C, 79.7°C, 79.9°C, 79.8°C, 79.8°C. What can best be concluded about these measurements?

The results are accurate but not precise

The results are precise but not accurate

The results are both accurate and precise

The results are neither accurate nor precise

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Two students are measuring the density of a liquid. Student A gets values of 1.02, 1.04, 1.03 g/mL, while Student B gets values of 0.89, 1.17, and 1.12 g/mL. The accepted value is 1.03 g/mL. Which statement is correct?

Student A shows high accuracy and high precision

Student A shows high precision but low accuracy

Student B shows high precision but low accuracy

Student B shows high accuracy but low precision

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an experiment, a group of students shoots arrows at a target. Most arrows land far from the center but are clustered together in one corner of the target. What does this indicate about the group’s performance?

High accuracy, low precision

Low accuracy, high precision

High accuracy, high precision

Low accuracy, low precision

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An engineer is designing a tank to hold a precise amount of fuel. If they can only measure one variable with high accuracy, which is most critical to minimize error in the final fuel calculation?

The density of the fuel

The height of the tank

The volume of the tank

The surface area of the tank

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A biology student is tasked with identifying an unknown metal cube by calculating its density. Which measurement is the most important to be both accurate and precise in order to identify the metal correctly?

Mass of the cube

Length of one side of the cube

Volume of the cube

Temperature of the room

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