1. Unit 1 Lesson 1 Introduction to Matter Essential Question:
Big Idea
Matter is described by its properties and may undergo changes
Unit 1 Lesson 1 Introduction to Matter
Essential Question:
What properties define matter?
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2. What’s the Matter? What is matter? P6 Active Reading #5
Unit 1 Lesson 1 Introduction to Matter P6
Active Reading #5
What’s the Matter?
Visualize It! #6
What is matter?
Matter is anything that has mass and takes up space.
Matter makes up the materials around you.
Everything is made up of matter.
Light, sound, and energy are not matter because they do not have mass or takes up space.

3. What is mass? P7 Mass describes the amount of matter in an object.
Unit 1 Lesson 1 Introduction to Matter P7
What is mass?
Mass describes the amount of matter in an object.
A gram (g) is a common measurement of mass.
Objects of the same size can be made up of different amounts of matter.
Weight is a measure of the gravitational force on an object.
The greater the mass of an object, the greater the gravitational force on the object and the greater the weight will be.

4. How does mass differ from weight?
Unit 1 Lesson 1 Introduction to Matter P7
How does mass differ from weight?
You would weigh less on the moon because gravity on the moon 1/6 as strong as it is on Earth.
Mass stays the same for an object even when increased or decreased gravitational forces change the weight of the object.
7) Weight is the downward pull of an object due to gravity. Because gravity on the moon is less than Earth, an astronaut weighs less on the moon. MASS STAYS THE SAME

5. Measuring Mass – Triple-Beam Balance
1st – Place the object on the scale.
2nd – Slide the large weight (100g) to the right until the arm drops below the line. Move the rider back one groove. Make sure it “clicks” into place.
3rd – Repeat this process with the top weight (10g). When the arm moves below the line, back it up one groove.
4th – Slide the small weight (1g) on the front beam until the lines match up.
5th – Add the amounts on each beam to find the total mass to the nearest tenth of a gram.

6. How are mass and weight measured?
Unit 1 Lesson 1 Introduction to Matter P8
How are mass and weight measured?
Visualize It #8)
Yes – this is a balance, so both sides need to balance. It would balance the same way on the moon or on Earth. MEASURES MASS
A triple-beam balance can be used to determine mass. The balance compares an object’s mass to countermasses.
Weight is measured with a spring scale.
The standard scientific unit for weight is the newton (N).
A 100-g mass weighs approximately 1 N on Earth.

7. Mass vs Weight 3) As mass increases, weight also increases.
4) The Spring inside the spring scale

9. Measuring Mass – Triple-Beam Balance
1st – Place the object on the scale.
2nd – Slide the large weight (100g) to the right until the arm drops below the line. Move the rider back one groove. Make sure it “clicks” into place.
3rd – Repeat this process with the top weight (10g). When the arm moves below the line, back it up one groove.
4th – Slide the small weight (1g) on the front beam until the lines match up.
5th – Add the amounts on each beam to find the total mass to the nearest tenth of a gram.