Classify each of the following as an element, a compound, a homogeneous mixture, or a heterogeneous mixture?

Question

1. seawater

2. helium gas

3. sodium chloride (table salt)

4. bottle of soft drink

5. milkshake

6. air in a bottle

7. concrete

Please describe if you can why they are each classification.

Thank you!!!

Answer 1

1. Seawater - heterogeneous mixture because its made up of different kinds of matter and you can actually see the different particles

2. Helium gas - element because Helium is an element

3. Sodium Chloride - Compound because its made up of two elements

4. Bottle of soft drink - homogeneous mixture because its not a compound/element but it still looks like its just one type of particle..if you get what I mean:)

5. Milkshake - Heterogenous because its made of different 'things' and you can see the different parts

6. Air in a bottle - If its pure oxygen it would be an element but if its composed of other particles that you cant see then its homogeneous

7. Concrete- is heterogeneous because you can see the different parts

Hope that helps you.. I'm not totally sure about number 6 because its not really clear but the rest should be right:)

Answer 2

sorry im not going to do your homework for you!