All of the following are evidence that a chemical reaction has occurred EXCEPT A/ a new substance formed

B/ a change in temperature occurred

C/ gas bubbles form

D/ matter changes state

Why did southern business leaders want to increase the number of slaves

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:

Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility