Yes, that is correct.
Car batteries will make a larger explosion than flashlight batteries would.
Connect Positive on A to Negative in B then Positive from B to whatever Positive on A had been connected to.
No, car batteries use lead for both plates. When charged the positive plate becomes white lead oxide.
The positive wire on most batteries is red. If both are black, look for the positive sign by the electrode.
By there positive and negative connectors and there acid.
Positive Wires are usually red.
If you incorrectly connect two car batteries together, i. e. by crossing the cables (negative to positive, positive to negative), one or both of the car batteries will soon explode. The resulting acid splash will cause severe burns to the nearby onlookers.
If the car is a 12 volt system, then you will want to connect the batteries in "parallel". IE: negative to negative and positive to positive. Because of "cranking amps" it would be advisable to use a cutoff switch when starting the car. (The switch would interrupt the power from one of the batteries so the amperage wouldn't toast the starter) Also, the alternator should be isolated as to charge the batteries one at a time.
Positive is normally red.
two 12 volt batteries. positive to negative between the two batteries then hoock up your positive on amp to pos of one battery negative to the other battery and you will have 24 volts.
sulfuric acid is clear and is used in lead acid batteries for cars.