Question

Both carbon dioxide and water are pure substances. How are they similar to each other?

A.) both substances have a set ratio of atoms that cannot be separated by physical means.
B.) both substances have a set ratio of atoms that can be separated by physical means.
C.) both substances have the same physical and chemical properties.
D.) both substances have the same physical properties, but different chemical properties.

My Answer is:

C.) both substances have the same physical and chemical properties.

Answer 1

I think its C too, but I am not 100 percent sure.

Answer 2

I don't agree with that answer. Carbon dioxide is a gas; water is a liquid. And you think they have the same physical properties? C'mon.

Answer 3

And a c'mon to Kalie, too.
What are physical properties? What are chemical properties.

Answer 4

A is the correct answer. Water is H2O and carbon dioxide is CO2. They have different physical properties (water is a liquid while CO2 is a gas at room temperature.) Both have a set ratio of atoms as shown by the formulas I've written. Water and CO2 have different chemical properties. And they can be decomposed into individual atoms by chemical but not by physical means.

Answer 5

Thank you this will help others I know it helped me a lot. :)