question 1 (1 point)
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in the first reaction with epsom salt added to ammonia, what...
Chemistry, 28.12.2019 13:31 apexdude2020
question 1 (1 point)
saved
in the first reaction with epsom salt added to ammonia, what evidence was there for a chemical reaction taking place?
question 1 options:
color change
formation of a precipitate
increase in temperature
formation of bubbles
question 2 (1 point)
in the second reaction with iron and oxygen, what evidence for a chemical reaction was not observed?
question 2 options:
new substance formed
formation of a precipitate
color change
change in temperature
question 3 (1 point)
in the third reaction which gas is released when baking soda is added to vinegar?
question 3 options:
carbon dioxide
hydrogen gas
water
oxygen
question 4 (1 point)
in the fourth reaction with copper sulfate and sodium hydroxide, what is the precipitate that is formed?
question 4 options:
cu(oh)2
naoh
cuso4
na2so4
Answers: 2
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