A student uses clay to model the conservation of mass. 1st she finds the mass of the clay on a balance. Then she makes shapes with the clay without adding or removing clay. She masses it again. How will her results model this law?

Students measure 2.0g of baking soda and 5.0g of vinegar. They mix them together and watch bubbles form. The mass of the resulting liquid is 6.7g. Based on the law of conservation of mass, what should the mass of the gas that escaped be?

Students measure 2.0g of baking soda and 5.0g of vinegar. They mix them together and watch bubbles form. The mass of the resulting liquid is 6.7g. How should students redesign this experiment for better accuracy?

Refer to chart 1. Which test should be considered the control?

Refer to chart 1. Which variable was changed in test # 2?

What should the students conclude about changing the amounts of reactants?

What should the students conclude from the #4 test?

Refer to chart 2. How has the development of computers depended on chemists?

Refer to chart 2. How have chemical fertilizers, insecticides and herbicides made our standard of living higher?

Refer to chart 2. Which of the following would be the best title for this reading?

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