Help me with my test.

Question

I've got my physics test tomorrow. And in physics Measurement and Force. Could you please give me some pointers so that I can ace the test thanks. And if you got time plz tell me how to balance the chemical equations.

Answer 1

in balancing chemical equatins u must be sure that both the LHS and RHS have equal no. of molecules.

for example,

H2 +O2>2H2O

Here the equation is balanced

Answer 2

With the measurement and force test... all i can say is study. Thats the only way you're gonna learn. maybe make up your own questions and answer them yourself. Thats what i do before a test.

Chemical equations are really easy with practice too. Basically you need to make sure there is the same number of molecules of each element on each side of the equation. You do this by changing the coefficients of each compound/element. A tip is to do the Oxygen and Hydrogen LAST. :)

good luck with your test. :)

I have one tomorrow too :/

Answer 3

breathe breathe  

Answer 4

just focus and study

Answer 5

I've not done balancing equations too much yet, but from what I remember you don't change the little number after the element (like if there was 02, you wouldn't change the 2) but you change (or add) a number before (if there was O2, you could have 602).