1. Physical Science - Introduction to Chemistry
February 5, 2019

2. Describing Matter
February 5, 2019
Objective: I can make scientific observations to describe matter.

3. Copy these seven questions into your notebook
Copy these seven questions into your notebook. Skip two or more spaces so that you can write in the answers. You have three and a half (3 ½ ) minutes to do this
What is chemistry?
What is matter?
What is the difference between mass and weight?
Define “Thinking Skills.”
What is observation?
What are the two types of observations?
What is inference?

4. the composition (make-up) of matter
Chemistry
The study of:
the composition (make-up) of matter
the changes that matter undergoes

5. occupies space (volume).
What is matter?
Anything that:
has mass
and
occupies space (volume).

6. Mass vs Weight
Mass: a measure of the amount of matter that an object contains. (SI unit kilogram, kg)
Weight: The force with which the earth pulls on an object. (SI unit Newton, N)

7. In order to describe matter we have to first be able to THINK and make observations…

8. Observation Quiz

9. Observation Quiz

10. Scientific Thinking
Thinking Skills – Skills that help a scientist attempt to understand the world around them.

11. Observation vs. Inference
An observation is the description of an event by using any or all of the five senses.
Qualitative – describes the observation
Quantitative – measures the observation
An inference is a conclusion or judgment based on observations but arrived at indirectly rather than directly.

12. Let’s practice making observations (both qualitative and quantitative) & inferences together…

13. List 2 observations and 2 inferences based on this picture.

14. List 2 observations and 2 inferences based on this picture.

15. List 2 observations and 2 inferences based on this picture.

16. Does seeing the entire picture help you make better inferences? Why?

17. Your turn to try #1:
Make some observations (both qualitative and quantitative) and inferences based on this cartoon.

18. Your turn to try #2:
Make some observations (both qualitative and quantitative) and inferences based on this cartoon.

19. Your turn to try #3:
Make some observations (both qualitative and quantitative) and inferences based on this cartoon.

20. Turn your notebook into me…