Sign up for FREE

16A Correction AS

Last updated about 5 years ago

7 questions

1

1

1

1

1

1

1

Question 2

2.

Often scientists will argue about the ‘rightness’ of their model, and in the process, the model will evolve or be rejected. Consequently, models are central to the process of knowledge-building in science and demonstrate how science knowledge is tentative or subject to change.

Based on this chemical formula: HeB2C
Which model is incorrect and needs to be rejected?

Reject this model

Reject this model

Reject this model

Reject this model

Question 3

3.

The correct chemical formula for sodium bicarbonate is below.

Why is this model depicted below an incorrect way to represent the formula above? There may be more than one answer.

According to the chemical formula, the model should have 2 more H atoms added

According to the chemical formula, the N and a should be togther as Na. This makes sense because no element symbol starts with a lowercase letter like atom a does in the model. 

According to the chemical formula, the C atom should be placed upside down. 

The element symbol O in the model should all be the same color, one is green while the other two are red and that is incorrect

Question 4

4.

Mr. Guesno created a great model. Here it is below, perfect in every way.

However, Mr. Guesno made a mistake in his chemical formula. Here it is below.

Use the sentence starter below to give Mr. Guesno some advice on how to fix his model.

Word bank: molecule chemical formula compound atoms subscripts amount adjust

Sentence Starter: In order to fix the chemical formula, Mr. Guesno should...

Question 6

6.

Below is a correct model:

The chemical formula below is incorrect:

N2Ar1O3ba2
Rewrite the chemical formula correctly (hint there are a total of 3 mistakes)

Question 7

7.

Dibromic acid has the correct chemical formula of:

Below is a model with several mistakes:

Redraw the model and correct the mistakes as well as add the missing parts.