What evidence of a chemical reaction might you see in dropping an Alka-Seltzer tablet into a glass of water?

Which graph shows acceleration? Graph A Graph B Question 7 options: Graph B shows acceleration, but Graph A does not. Graph A shows acceleration, but Graph B does not. Graph A and B both show acceleration. Neither graph shows acceleration.

You are running a lemonade stand with your friend. You prepared 10 liters of 0.7 molarity lemonade, but your friend did online research and found that people prefer 0.4 Molarity lemonade. How can you fix the lemonade you made so that it is 0.

Three chromium isotopes are chromium - 50, chromium-52, and chromium-53. How many neutrons are in each isotope, given that chromium has an atomic number of 24?

What happens to water molecules that form the ice on a road when temperatures rise and the ice begins to melt? a) As temperature increases, the water molecules begin to move farther apart as they lose kinetic energy and form a liquid.

What determines if an element is a solid or liquid at room temperature? this isn't a test question BTW.,

During an endothermic phase change, what happens to the potential energy and the kinetic energy?

What is the difference between pure substance, element, and compund

Butane gas is used as the fuel in disposable lighters. It burn in oxygen to form carbon dioxide gas and water vapor. What mass of carbon dioxide is produced when 53.3 g of butane is burned in 103.9 g of oxygen

Suppose a solution was too concentrated for an accurate reading with the spectrophotometer. The concentrated solution was diluted by placing 1.00 mL of the concentrated solution in 4.00 mL of water.

What kinds of scientific investagations involve making observations