Chapter 1 Lesson 1

Chapter 1 Lesson 1

​Describing Matter

​Describing Matter

​Matter: anything that has mass and takes up space

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​Chemistry: the study of matter and how matter changes

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​Substance: a single kind of matter that is pure, meaning it always has a specific makeup, or composition

​ ex: Water is a pure substance. Whether it comes from a glacier or a geyser, it is always H O

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​Physical Properties

• ​A physical property can be observed without changing it into another substance

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• ​The temperature at which substances melt and boil are physical properties

​ - melting and boiling points

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• ​Other physical properties include: hardness, texture, temperature, flexibility, and color

​Chemical Properties

• ​A chemical property describes a substance's ability to change into different substances

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• ​For example, when a metal rusts, it is changing from one substance and creating another

• ​Flammability, the ability to burn, is a chemical property

Multiple Select

Which of the following are CHEMICAL properties?

• Texture

• Hardness

• lack of ability to rust

• state of matter

• ability to react with other substances

Multiple Choice

The physical property that makes metal pots good for cooking is ___.

• flexibility

• electrical conductivity

• flammability

• heat conductivity