Easy Chemistry Weaknesses Flashcards
1
Q
Definition of an isotope
A
An atom that is the same element but has a different number of neutrons.
2
Q
First step to balancing this equation:
K + H2O → KOH + H2
A
K is balanced.
There are 2 hydrogens on the left side and 3 on the right. We want to make the right side have an even amount to make life simpler. Therefore step 1 is to add a coefficient of 2 to KOH.
3
Q
How to balance a combustion reaction like:
CH4 + O2 → CO2 +H2O
A
Leave O2 for last. Then balance hydrogen. Once hydrogen is balanced, balance oxygen.
