Target Grades: 5-9 Time Required: 30-60 minutes Subject Areas: Chemistry Activity Type: Kitchen Experiment Standards: NGSS DCI PS1-A, MS-PS1-1, HS-PS1-3 If you’ve ever tried to make salad dressing from scratch, you know that one of the biggest challenges is getting the oil and the vinegar to mix properly. No matter how hard you try to shake, stir, or whisk […]