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by Justin Quan 4I
Fri Oct 04, 2019 11:02 am
Forum: Balancing Chemical Reactions
Topic: When are atoms lost or created?
Replies: 14
Views: 544

Re: When are atoms lost or created?

No atoms cannot be created or destroyed, but something’s we leave out intermediate reactants and products to simply the chemical equation.
by Justin Quan 4I
Fri Oct 04, 2019 11:00 am
Forum: Significant Figures
Topic: Significant Figures
Replies: 6
Views: 118

Re: Significant Figures

I usually try to round off at the very end, but I feel like I still get answers off sometimes. Do you guys use the exact values in your calculator all the way through? I find this especially tricky to not round throughout the problem when you do limiting reactant/ stoichiometric calculations. If yo...
by Justin Quan 4I
Fri Oct 04, 2019 10:56 am
Forum: Balancing Chemical Reactions
Topic: How to Balance A Chemical Reaction
Replies: 7
Views: 174

Re: How to Balance A Chemical Reaction

Emma Joy Schaetz 1E wrote:
Elizabeth_3F wrote:Remember when balancing equations, start with the least number of atoms so you won't get confused!

Is this always true with balancing equations?


Yes, for the most part, start with the most complex molecule first, usually one that’s not H2O or O2, because water and oxygen are easier to balance.
by Justin Quan 4I
Fri Oct 04, 2019 10:23 am
Forum: Significant Figures
Topic: All students read this sig fig post [ENDORSED]
Replies: 133
Views: 18213

Re: All students read this sig fig post [ENDORSED]

When showing work on homework, must we write out all the sig figs in the intermediate steps even when we know the final answer will have fewer sig figs?

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