I'll award a medal for the help!

1. Describe the current model of the atom.

2. How is the periodic table of elements arranged?

3. Compare and contrast physical changes and chemical changes.

4. Design an experiment that could be used to demonstrate a chemical or physical change. Explain what makes it a chemical or physical change and explain what happens to mass and energy

5. Design an activity that you could use to teach someone else about the laws of conservation of mass and energy.

Question

I'll award a medal for the help!

1. Describe the current model of the atom.

2. How is the periodic table of elements arranged?

3. Compare and contrast physical changes and chemical changes.

4. Design an experiment that could be used to demonstrate a chemical or physical change.	Explain	 what makes it	a chemical or physical	change and explain what happens to mass and energy

5. Design an activity that you could use to teach someone else about  the laws of conservation of mass and energy.

neonumbrella5115 · Answer

Do you need help with everything?  Or a specific part?

simplymarie_x · Answer

I mostly just need help with 4 & 5. I think I can do the others on my own. :) @neonumbrella5115

neonumbrella5115 · Answer

An experiment could be about the evaporation on water and salt water with the independent variable as salt and dependent variable as the time the solution takes to evaporate.  This is a physical change, liquid to gas.