chemistry
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12 Terms
what are the starting substance called
reactants
what does the arrow represnt
react to make
what happens to atoms in chemical reaction
rearrange and join together diffrently
what does nitrogen dioxide harm
environment and health
in a acid reaction what does calcium carbonate and nitic acid react to make
calcium nitrate +carbon dioxide+ water
in a precipitation reaction what does lead nitrate and potassium iodide react to make
lead iodide + potassium nitrate
does the mixing reaction increase or decrease for exothermic reaction
increase
does endothermic transfer heat to or from the surrounding
from
what state of change belong to endothermic reaction
melting and evaporation
what is reactivity
the tendency of a substance to take place in chemical reaction
what is the order of reactivity
sodium magnesium zinc iron copper and gold