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Question 1 (1 point)
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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

User Inx Maurya
by
7.8k points

1 Answer

3 votes

1.formation of bubbles

2.change in tempeture

3.hydrogen gas

4.NaOH

User Givi
by
7.6k points
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