Chemistry Case

What is the relationship between mL and cm3? 1cm3 = 1mL

A. B. Everyone knows that water is supposed to boil at 100° C. Did your sample boil at 100° C.? If not why did your water sample boil at a different temperature?

A. C. An unknown rectangular substance measures 3.6 cm high, 4.21 cm long and 1.17cm wide.If the mass is 21.3g, what is the density of this substance?

A. D. A sample of gold (Au) has a mass of 26.12g. Given that the theoretical density is 19.30 g/mL, what is the volume of the gold sample?

A. E. Determine the following:

1) What is your mass or the mass of a friend, pet, or some large object in kilograms (kg)? Don't forget to identify the mass you are listing.

2) Name an object that weighs approximately 1 g?

Paperclip weighs approximately 1 gram

3) Name an object that weighs about 100 g? A US nickel weighs 5.0 grams, so 20 US nickels weigh 100 grams even

4) Name an object that weighs about 1000 g? A whole pineapple

C. Classify the following properties of sodium metal as physical or chemical:

Silver metallic color: physical property

Turns gray in air: physical property

Melts at 98oC: physical property

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