Lesson 2 Review: CER, Models, Procedures

What does the C represent in CER?

• Claim

• Chemistry

• Conclusion

Tags

NGSS.MS-PS3-5

What does the E represent in CER?

• Explanation

• Evidence

• Event

Tags

NGSS.MS-LS2-4

What does R represent in CER?

• Response

• Reasoning

• Repetition

Tags

NGSS.MS-LS1-3

NGSS.MS-LS2-4

NGSS.MS-PS3-5

Match the words to their definitions.

• The steps in an experiment

• Procedure

• Data that supports the claim

• Claim

• How & why evidence supports the claim

• Model

• A visual way to represent objects/ideas

• Reasoning

• A sentence that answers the question

• Evidence

Organize these sentences into the correct categories.

Groups:

(a) Question

,

(b) Claim

,

(c) Evidence

,

(d) Reasoning

• I think steak tacos is a sandwich.

• My model shows the bubbles carrying the raisins to the top.

• My evidence supports my claim that steak tacos is a sandwich because the tortilla is like bread.

• What makes the raisins go up and down?

• Is your food a soup, salad, or sandwich?

• My food is like a sandwich because the tortilla holds the meat on the inside together.

• All of this proves that heat causes the fish to move because it only reacted on the warm hand.

• What causes the fortune telling fish to move?

• Based on this evidence, I can conclude that the bubbles made the raisins go up and down.

• When the fish was on my hand, it moved. When the fish was on the table, it did not move.

• I think the raisins go up and down because of the bubbles in the water.

• The fish moves because of the heat in my hand.

Why do we use models in Chemistry? (More than one correct answer)

• To show things that are too small for us to normally work with

• To show things that are too big for us to normally work with

• To show things that are too expensive for us to normally work with

• To show and explain how things work

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Organize these options into the correct categories for models.

Groups:

(a) Pictures

,

(b) Graphs

,

(c) Equations

• 
• 
• 
• 
• 
• 

Tags

NGSS.MS-LS1-2

NGSS.MS-PS1-1

NGSS.MS-PS3-1

What are qualities of a good procedure? (More than one correct answer)

• Uses numbers and units

• Detailed enough so that someone call follow it step-by-step

• Has the steps in the order they occur

• Is confusing for someone to follow

A student gives the following procedure for brushing their teeth.

1. Get toothpaste.

2. Brush.

3. Spit.

3. 4. Rinse.

Give this student a GLOW and a GROW. What did they do well? What could they do better next time?