Question with this equation: Calcium Carbonate + Hydrochloric Acid = Calcium Chloride + Water + Carbon Dioxide -
1. How did you figure out what Calcium Carbonate + Hydrochloric Acid equals?
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2. Why does Calcium react with Chlorine to form Caclium Chloride, why doesn't it react with Hydrogen for example?

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts

The second and last option are the answers

2licl + 3o2 i yook the test and it was correct.

First up write the aim
then write the materials reqd.
then the procedure which you follow
then observation
then conclusion
then you can write lab safety rules or precautions(you can avoid if u want).
lemme' give an example
aim: to observe the double displacement reaction
materials reqd: bacl2 and na2so4, test tubes and a dropper
procedure:
1. take bacl2 in a test tube and na2so4 in the other.
2. then pour bacl2 into na2so4 solution.
3. observe
observation:
you will see that a white precipitate is formed called baso4. along with that common salt or nacl is formed.
the equation is
bacl2+na2so4=baso4+2nacl
conclusion:
a double displacement reaction is observed.
hope it