Bellwork

10/29/2018 - Go to this webpage. If the page is not working, go to this page instead.

Answer each question in a complete sentence.

• What is the size of an atom? Use the correct units.
• Can we "see" an atom? Explain
• What is something you recognize that is a little larger than an atom?
• What is something smaller than an atom?

10/30/2018

If the particles that make up the pinhead were the size of a pinhead, how large would the pinhead be?

1. The size of a grape fruit
2. The size of this school
3. The size of Mt. Everest
4. The size of Mt. Everest x 15

10/31/2018 - go to the assigned simulation in Ck-12

Answer each question in a complete sentence.

1. The largest component of air is Nitrogen gas (N2). Is that an atom, compound, or molecule?
2. What is the difference between a compound and a molecule?
3. Table sale, otherwise known as NaCl is composed of Sodium and Chlorine. Is it an atom, compound or molecule?
4. Which classification of matter (element, compound, or mixture) could be separated using a filter?

11/1/2018 - Classify the objects as an element, compound, or mixture.

1. Oil (C₁₈H₃₆O₂₎ & Water (H2O)

2. Chalk (CaCO3)

3. Copper (Cu)

4. Water (H2O)

5. Aluminum foil (Al)

6. Air

7. Graphite (C)

8. Tea

11/2/2018

Identify the substances that were separated in yesterday's lab as either being an element, compound, or mixture.