When a chemical change happens we sometimes see a colour change. What other observations tell you that a chemical change is happening?

Which is the largest gas giant?

When must a psychological researcher debrief human test subjects? only when deception or manipulation is involved at the end of every experiment when a placebo is given after terrifying information is given in an experiment

If an unbalanced force acts on an object you can expect that the object ... a ... will experience some change in its velocity. b ... will not move. c ... will continue to move as it was originally. d ... will seek out its place of origin. e ...

Select the best dated evidence that humans have been on Earth for over four million years from the choices provided. A. A fossil nicknamed Lucy was found in East Africa. B. A specimen nicknamed Ardi was found in East Africa. C.

3. Which of the following is true about nonrenewable resources? A. Nonrenewable resources cannot be replaced as fast as they are used. B. Wind energy is a nonrenewable resource. C. Nonrenewable resources are resources that have run out. D.

If a car goes along a straight road heading east and speeds up from 45 ft/s to 60. ft/s in 5 sec, calculate the acceleration

To generate higher profit margins, producers must work to increase their total supply. increase their total expenses. decrease their customer base. decrease their production costs

Solar energy isn't usually used as the only power source for a reason because what

What particle can be stopped by skin

What was significant about the atomic theory that democrituis proposed?