Case Study #1: Poppy was a senior in high school when she began to worry her parents and friends. Poppy was moody and sensitive. When she entered her sophomore year, she dyed her hair black and started wearing black eye makeup and black clothing. She rarely spoke at home. She would come home from school and hide out in her room. She avoided meals with her family and she was always brooding. Whenever anyone showed concern for her well-being she got angry and pushed them away. One evening, she ran into her mom’s room screaming that she was afraid she was going to die. Blood was pouring from her right arm. Her mother took her directly to the ER - where her mother discovered this was not the first time she had been cutting. Under her long sleeves and long pants, her arms and legs were covered with scars and cuts. Poppy was discovered to be heavy into drugs and drinking and had very few friends. Symptoms: Diagnosis:

Follow the steps provided in the simulation to add water to the graduated cylinder, select one of the three samples (copper, silver, or gold), set its mass to the values given in the statements below, and calculate its density. here is a summary of the steps required: add water by clicking and holding prepare a known volume of water button. until the desired volume of water has been added. if more than the desired volume is added, click the reset button. button and redo the procedure. a single click will add about 21.0 ml of water. to set the mass, click and hold weigh out metal button. until the desired amount of metal is added to the weighing pan. once the desired mass of the metal is added, release the button. transfer the metal to water and then click on calculate density button. to see how the density is calculated using water displacement to measure the volume of the solid. to save time you can approximate the initial volume of water to â±1 ml and the initial mass of the solid to â±1 g. for example, if you are asked to add 23 ml of water, add between 22 ml and 24 ml. which metals in each of the following sets will have equal density? check all that apply.

Select the most likely product for this reaction: koh(aq) + co2(g) – ? k2co3(aq) + h2o(1) k(s) + h2(g) + o2(g) k(s) + co3(9) +h2

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse