Suggest the materials and apparatus that you will require to test the change in physical state of bitumen at different temperatures.
Design the experiment to test the change in state of bitumen with change in temperature (State the steps to perform the experiment and safety measures to be followed)
Refer to www.ptable.com. Study the elements of Group 1 (group I) upto Period 4 for atomic number, electron distribution / energy level, boiling point, physical state at room temperature. Organise these data in a table below in the ascending order of atomic number.
Plot a graph of Change in Atomic Number Versus Change in Number of Valence Orbital for the elements present in above table.
Interpret the chemical reactivity of Potassium and Lithium based on above graph
One of grade 6 student, while trying to understand existence of different forms of matter for a substance with change in temperature, also changes pressure. State the validity and improvisation (if any) in the student's approach.
A science teacher predicts, "As the atomic number increases in group 17(group vii) the atomic radius decreases". Use your knowledge of electron distribution across the group and state validity of the hypothesis.
The independent variable in my experiment will be temperature of bitumen
My dependent variable for this experiment will be:
Hypothesis / Prediction
Suggest the enhancements / improvisation that can affect the result of dependent variable at a given value of your independent variable