Amanda dissolves some sugar in water in a beaker. She allows the water to evaporate and notices that solid sugar remains in the bottom of the beaker. What two pieces of evidence can be provided to show that this is a physical change?

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

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

What is the percentage composition of carbon in the compound ch4