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How is crystal growth affected by adding chemical amounts to water?

How is crystal growth affected by adding chemical amounts to water?

Students will investigate how crystal growth is affected by adding different chemical amounts to water. Provide 2 containers for students, and have them label each container with their names. Have students also include labels signifying the amount of chemical additive that will be used with each container (3.5g and 7g).

What should I label my crystals with in chemistry?

Students will manipulate the temperature of the liquid used to make their crystals. Students should label their containers with their names and an H (heated) or a C (cold). The same amount of water and copper sulfate or other chemical for each container will be used. The only difference is the temperature of the water used to make each solution.

What are some variables to consider when making crystals?

Some variables that students may suggest are: temperature of the mixture, temperature in the room, type of container used, amount of water, amount of solid, placement of slides, how the mixture is heated, or atmospheric conditions. Students will then need to choose what they would like to change when making their crystals.

How to compare crystals grown from non iodized salt?

You can compare crystals allowed to cool at room temperature to those formed from cooling the liquid in a refrigerator. What effect do additives have on the crystals? You could add food coloring, flavorings, or other ‘impurities’. How do crystals grown from non-iodized salt compare with those grown from iodized salt?

What can affect the growth of a crystal?

You can affect parameters such as vibration, humidity, temperature, the rate of evaporation, purity of your growth medium, and time allowed for crystal growth. The type of container used to grow your crystals may make a difference, as could the type of string used to suspend a seed crystal (or other method used to grow a crystal).

Students will manipulate the temperature of the liquid used to make their crystals. Students should label their containers with their names and an H (heated) or a C (cold). The same amount of water and copper sulfate or other chemical for each container will be used. The only difference is the temperature of the water used to make each solution.

Some variables that students may suggest are: temperature of the mixture, temperature in the room, type of container used, amount of water, amount of solid, placement of slides, how the mixture is heated, or atmospheric conditions. Students will then need to choose what they would like to change when making their crystals.

You can compare crystals allowed to cool at room temperature to those formed from cooling the liquid in a refrigerator. What effect do additives have on the crystals? You could add food coloring, flavorings, or other ‘impurities’. How do crystals grown from non-iodized salt compare with those grown from iodized salt?