Growing Copper Sulfate Crystals
What is the effect of a seed crystal on crystal size on copper sulfate crystals
in a petri dish at room temperature?
California Science Content Standards
Focus on Physical Science
Structure of Matter
- Each of the more than 100 elements of matter has distinct properties and a distinct atomic structure. All forms of matter are composed of one or more of the elements. As a basis for understanding this concept:
c. Students know atoms and molecules form solids by building up repeating patterns, such as the
crystal structure of NaCl or long-chain polymers.
- Chemical reactions are processes in which atoms are rearranged into different combinations of molecules. As a basis for understanding this concept:
d. Students know physical processes include freezing and boiling, in which a material changes form with no chemical reaction.
Investigation and Experimentation
- Scientific progress is made by asking meaningful questions and conducting careful investigations. As a basis for understanding this concept and addressing the content in the other three strands, students should develop their own questions and perform investigations. Students will:
a. Plan and conduct a scientific investigation to test a hypothesis.
b. Evaluate the accuracy and reproducibility of data.
c. Distinguish between variable and controlled parameters in a test.
Variables Tested by students:
Link to experiment set-up and results