Practice Weighing Balance (6.1.9) - Environmental Sampling - Environmental Quality Monitoring & Analysis, - Vol 1

Practice: Weighing Balance

Lesson 6.1.9Environmental Sampling

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9 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does a weighing balance measure?
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Think about what we call this quantity that we measure.
Question 2.
What is the formula for concentration?
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Recall how we describe concentration in science.
3Question 3.
What is the primary function of a weighing balance?
- To measure volume
- To measure mass
- To measure temperature
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Think about what 'weight' refers to in physics.
4Question 4.
True or False: Sensitivity of an instrument is defined as its ability to measure large quantities accurately.
- True
- False
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What do we mean by 'detecting' in measurements?
Question 5.
A laboratory wants to ensure the precision of their weighing balance. They measure a 50-gram sample three times and get 50.1g, 49.9g, and 50.0g. Discuss the precision and provide statistical tools to evaluate it.
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What formulas can help you calculate the spread in your data?
Question 6.
Discuss strategies for ensuring both accuracy and precision when measuring TSS in environmental samples.
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How can you control the variables during your measurements?

5 more questions in this section. Enroll free to practise them all.