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?
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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.
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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...
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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)
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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.