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During a lab, what should you always remember when making observations?
During a lab, what should you always remember when making observations?
- Do not record any observations
- Use your senses to make observations (correct)
- Be as general as possible
- Use your sense of taste to make observations
What were the details of the first test to find the 2 substances in the mystery mixture?
What were the details of the first test to find the 2 substances in the mystery mixture?
- Provided with 5ml of mystery mixture, added 4-5 pipettes of water, observed and recorded after each addition of water (correct)
- Provided with 10ml of mystery mixture, added 4-5 pipettes of water, observed and recorded after each addition of water
- Provided with 10ml of mystery mixture, added 1-2 pipettes of water, observed and recorded after each addition of water
- Provided with 5ml of mystery mixture, added 1-2 pipettes of water, observed and recorded after each addition of water
How do you properly use a pipette?
How do you properly use a pipette?
- Squeeze the bulb while the pipette is still in the water, then release the bulb (correct)
- Squeeze the bulb after removing the pipette from the water
- Do not squeeze the bulb at all
- Squeeze the bulb quickly and with great force
What is the name of the tool used to look closer at the substances?
What is the name of the tool used to look closer at the substances?
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What information was provided on the vial labels?
What information was provided on the vial labels?
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What does the presence of bubbles indicate when water is added to the mixture?
What does the presence of bubbles indicate when water is added to the mixture?
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What are the uses of citric acid?
What are the uses of citric acid?
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What are the uses of sodium bicarbonate?
What are the uses of sodium bicarbonate?
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What are the uses of magnesium sulfate?
What are the uses of magnesium sulfate?
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What are the uses of calcium chloride?
What are the uses of calcium chloride?
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