Materials:
Reactions in our World Virtual Lab
Variables:
List your controlled variables, independent variable, and dependent variable for each
experiment in the chart below. Remember, controlled variables are factors that remain the
same throughout the experiment. An independent (test) variable changes so that the
experimenter can see the effect on other variables. The dependent (outcome) variable will
change in response to the test variable.
Chemical Reaction
Controlled
Variables
Independent
Variable
Dependent
Variable
Iron and copper (II) sulfate solution
Lead (II) nitrate and potassium iodide
solutions
Magnesium metal and hydrochloric acid
solution
Electrolysis of water
Burning magnesium
Solved
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Ответ:
Anwser A
Explanation:
Sand dunes are created by wind deposition.