SI Units

[Adrienne_4F]

Hi! I'm a little confused about the SI unit for mass. In the lecture, professor said that the SI unit for mass was kilograms. When we're writing our answers, do we convert our answers from grams to kilograms? Thank you!

[Anushi Patel 1J]

I'm not 100% sure, but I think if the question asks for grams, we should keep our answer in grams. When we are doing calculations that require inputting the mass of something into a formula, that's when we convert from grams to kilograms.

[skyeblee2F]

I agree with Anushi. Whatever the given mass is in the problem is the unit you should give in your answer.

[Saleha_Mian_3E]

I agree, it depends on the problem if it asks for kg or g. I think when he meant to use kg for SI units he meant don't use pounds (lbs) because that is not an SI unit.

[jocelyntzeng]

i agree, regardless of what the units you end up with, you should always end with the units that the question asks for

[Karan Thaker 2L]

I feel like for what we've done so far just always go with grams unless the question asks for kilograms. Chemistry involves measuring and calculating things in such small scale that using kilograms instead of grams seems unlikely. Of course, if the question specifies than go for kilogram but I think otherwise grams would be the way to go.

[Kelly Zhang 1L]

When we're doing problems, do we need to show units for our work to get credit?

[Jordan Lo 2A]

I believe that that it's better to air on the side of caution and always show units. On Lavelle's website, he included a link to an article about how important units are https://lavelle.chem.ucla.edu/wp-conten ... 4aflip.pdf
Also, I find it much easier to solve problems (for now) when I use units because they provide me a roadmap of which calculations I need to perform as I cancel out the units

When we're doing problems, do we need to show units for our work to get credit?