What is it Substances and mixtures are classes of matter Mixtures are beterogeneous or mthout uniform composition and appearance are not the same all throughout The temperature of a mixture is different at different times. Dering melting, a mixture has portions that seem to be not melting, Figures below show separating techniques for the components of mixtures. Another set of properties that distinguishes substances from mixtures. Z $ - Figure A Figure B Figure C ted 7 Figure D Figure E Figure F Find out if you have discovered and understood the important concepts of the lesson. Answer the following questions. Write the letter of your answer on a separate sheet of paper. 1. Which pictures show filtration or straining? 2. Which picture shows filter paper being used? 3. Which picture shows pieces of iron being separated? 4. Which picture shows decantation? 5. Which picture shows dissolving? 6. Which picture shows evaporation?​