1. is mass conserved when 50 g of sugar undergoes a physical change? use complete sentences to support your answer by explaining how this can be demonstrated. 2. during an investigation a scientist burned 48 g of magnesium strip. after the reaction the total mass of the product formed was found to be 80 g. does the law of conservation of mass hold true in this case? use complete sentences to justify your answer based on numerical calculations.

Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.

Read the claim. breakfast is an important meal. it jump starts the body’s process of using calories to break down food. appetite can decrease with age, but going too long without eating causes metabolism to slow down. current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours. who might benefit from this claim? people who have a fast metabolism stores that sell exercise equipment people who take vitamin supplements grocery stores that sell legumes

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.