Weighing water
1 mL of water is close to 1 g.
A glass of water
You have 10 mL of water.
About how much does it weigh in grams?
What this lesson covers
The idea
At room temperature the mass of 1 mL of water is close to 1 g, so the mass of water in grams is taken as roughly equal to its volume in millilitres.
A glass of water
You have 10 mL of water.
About how much does it weigh in grams?
- About 10 g
- About 100 g
- About 1 g
Volume to mass
Open each tab.
1 mL is about 1 g
At room temperature the mass of 1 mL of water is close to 1 g. So the mass of water in grams is roughly its volume in millilitres.
At room temperature, 1 mL of water ≈ 1 g. Mass of water in g ≈ volume in mL.
Notes
1 mL of water ≈ 1 g at room temperature.
Check yourself
What is the approximate mass of 10 mL of water in grams?
Answer: 10 g
10 mL of water is approximately 10 g.
What is the approximate mass of 100 mL of water in grams?
Answer: 100 g
100 mL of water is approximately 100 g.
What is the approximate mass of 250 mL of water in grams?
Answer: 250 g
250 mL of water is approximately 250 g.
The mass of 1 mL of water at room temperature is close to …
- 10 g. That is the mass of 10 mL.
- 1 g — correct. Yes!
- 100 g. That is the mass of 100 mL.