The list shows a number of common chemical substances. [5] A. iron
B. carbon dioxide
C. mercury
D. hydrogen
E. sodium chloride
F. water

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- Divide the above elements into metals and non-metals.

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h

Ted and emily played a mixed doubles tennis match against jack and brenda. in the second match. ted and brenda played against jack and emily. which type of chemical reaction does the situation demonstrate?