Gr.7 Ch.7 Booklet Answer 2016.notebook December 14, 2016 1 Gr.7 Ch.7 Booklet Answer 2016.notebook December 14, 2016 2 Gr.7 Ch.7 Booklet Answer 2016.notebook Always appear as uniform throughout they are made of only one type of matter examples:sugar, gold, carbon dioxide, oxygen December 14, 2016 may have distinct visible components may appear uniform throughout examples: salt water, chocolate chip cookie, muddy water, salad dressing, air 3 Gr.7 Ch.7 Booklet Answer 2016.notebook December 14, 2016 You can delete this page and look in exercise. Students should have a table with 3 columns similar to the last page in this document. 4 Gr.7 Ch.7 Booklet Answer 2016.notebook December 14, 2016 mechanical mixture (solution) solution Solid, liquid + gas are evenly mixed so that none of the original substances are visible ONE mechanical mixture solid, liquid, gas particles are not evenly mixed Two or MORE light passes light scatters as through unaffected it passes through Koolaid, oil stainless steel granola bar, concrete pizza 5 Gr.7 Ch.7 Booklet Answer 2016.notebook Diagram (a) is a PURE SUBTANCE December 14, 2016 because the same particle is throughout the substance. Diagram (b) is a HETEROGENEOUS MIXTURE because the different particles are NOT evenly mixed. They are random pattern throughout the substance. Diagram (c) is a HOMOGENEOUS MIXTURE because the different particles are evenly mixed throughout the substance. Homogeneous ex. Kool aid Heterogeneous ex. pepper & water 6 Gr.7 Ch.7 Booklet Answer 2016.notebook December 14, 2016 7 Gr.7 Ch.7 Booklet Answer 2016.notebook December 14, 2016 What 3 things can help you tell if a mixture is a solution or a heterogeneous mixture? (p.244) 1. Microscope if you can see more than one particle when viewing a substance, under the microscope, then the substance is heterogeneous. 2. Filter if some of the substance remains on the filter after filtering, then the substance is heterogeneous. 3. Light Beam if a light beam can shine through a mixture then it is a solution Mar 129:51 AM 8 Gr.7 Ch.7 Booklet Answer 2016.notebook December 14, 2016 Pure Substance Heterogeneous Mixture Homogeneous Mixture distilled water chocolate chip cookie carbonated drinks( no bubbles) quartz pizza bronze salt carbonated drinks(bubbles) gold (10 karat) aluminum dust brass (zinc/copper) copper money fresh air silver dirty water paint gold (24 karat) cloud apple juice mist orange juicepulp air fog granite vinegar iron milk pollution Dec 511:32 AM 9
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