Content Outline for Teaching - Potosi School District - Home
Content Outline for Teaching - Potosi School District - Home
Content Outline for Teaching - Potosi School District - Home
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3<br />
Section 2<br />
<strong>Content</strong> <strong>Outline</strong><br />
<strong>for</strong> <strong>Teaching</strong><br />
Chemical Properties and Changes<br />
Matter and Its Changes<br />
Underlined words and<br />
phrases are to be filled<br />
in by students on the<br />
Note-taking Worksheet.<br />
A. Chemical property—characteristic that gives a substance the ability to undergo<br />
a change that results in a new substance<br />
1. Flammability<br />
2. Reacts with oxygen, light, water, or other substances<br />
B. Chemical change—change in the identity of a substance due to its chemical<br />
properties<br />
1. Signs of a chemical change can include production of bubbles, heat, light,<br />
smoke, sounds, or color change.<br />
2. Chemical changes are not reversible using physical means.<br />
C. Law of conservation of mass—mass is never lost or gained in a chemical reaction.<br />
1. When material is burned, residue is less massive than original material.<br />
2. Ash, smoke, and gases escaped into the air.<br />
3. Their mass was not lost, only relocated.<br />
Discussion Question<br />
What are some signs of a chemical reaction? bubbles, heat, light, smoke,<br />
sounds, or color changes<br />
Matter and Its Changes 9
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