Ben and jerry were testing powders in science lab. first they put the powder in a zip lock bag. next they added some water. the powder fizzed and bubbled; soon it disappeared. when the bubbling stopped the bag contained a clear liquid and a lot of gas. what is the most obvious sign of a chemical change in this reaction?

How do forces between particles in gases compare to forces in the other states of matter? o a. the forces in gases are stronger than forces in solids but weaker than forces in liquids. o b. the forces in gases are weaker than forces in solids but stronger than forces in liquids. o c. the forces in gases are weaker than forces in solids and liquids. o d. the forces in gases are stronger than forces in solids and liquids. submit

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

Name the element in group 17, period 2. (periodic table)