Chapter 1: Nutrient Cycles and Energy Flow

Chapter 1: Nutrient Cycles and Energy Flow

Unit 1: Exploring Matter Section 1.2: Physical and Chemical Properties Matter Matter is anything that has mass and takes up space. Therefore, everything you can see, touch, smell, or taste. Mass is the amount of matter in an object.

Mass is measured using a scale. Question: Which is heavier Neither, they a kilogram of both feathers or ahave kilogram rocks? theofsame mass!

Physical Property A physical property is a characteristic of a substance that can be observed and measured without changing the identity of the substance. An example of a physical property would be the colour or hardness of a certain metal. The physical properties of materials play a significant role in determining practical uses for these substances. Examples of Physical Properties Common physical

properties: Density the ratio of mass to volume. Hardness resistance of a solid to be scratched. Solubility ability of a substance to dissolve. Viscosity measure of how easily a liquid flows. Chemical Property Chemical properties

describe the ability of a substance to react with another substance to form one or more new substances. When the chemicals housed in a glow stick are mixed, they undergo a chemical reaction that produces light. Examples of Chemical Properties Common chemical properties: Combustibility the ability of a substance to burn.

Reactivity the ability of a substance to react with other chemicals. Light sensitivity ability of a substance to interact with light exposure. What property is described by each of the following statements? combustibility 1. A propane tank bursts into flames. 2. A diamond can scratch glass. 3. 4. 5. 6. 7.

hardness Ketchup flows slowly from a bottle. viscosity Sugar dissolves in my coffee. solubility A photo of my dog has faded. light sensitivity texture Sandpaper is rough. boiling point Water boils at 100C. conductivity 8. The metal pan handle is very hot.

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