Questions: 1. What have you noticed after you pour the pebbles into the water?
2. Why do you think the pebbles did not mix with water?
Excellent! You have performed the simple expirement well. Read and study the
following concept to better understand the lesson.

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer