Units

$E=hv$

Posts: 29
Joined: Tue Oct 02, 2018 12:16 am

Units

Are remembering units for this equation, and others, necessary? Or are they given on the test?

Chem_Mod
Posts: 16977
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 364 times

Re: Units

Knowing the units of variables helps, because you'll know when to multiply or divide variables to get what you're looking for (essentially dimensional analysis). You will be provided units for variables specified in the question, but you won't be told what the units are for variables in specific equations.

LeannaPhan14BDis1D
Posts: 57
Joined: Fri Sep 28, 2018 12:16 am

Re: Units

What equation do you mean? is there a specific equation you are referring to? The test requires you to answer with correct units and sig figs. I do not believe that they give you the units.

Bruce Chen 2H
Posts: 60
Joined: Fri Sep 28, 2018 12:26 am

Re: Units

Units 100% should be memorized. It makes solving the problems much quicker and will allow you to finish earlier without having to think about it. We will not be given these on the tests

josephperez_2C
Posts: 70
Joined: Wed Nov 15, 2017 3:04 am

Re: Units

While there are some units on the equation sheet given, it is probably best to know units as best you can.

Maria Nabagala 3E
Posts: 30
Joined: Fri Sep 28, 2018 12:24 am
Been upvoted: 2 times

Re: Units

I don't think units are given on the test, they are something you should know because it helps when you need to cancel out units to get your final answer

Jack Hewitt 2H
Posts: 67
Joined: Fri Sep 28, 2018 12:27 am

Re: Units

The test required students to know correct units as well as significant figures.