Answer:What should you do if you realize during research that your original theory is wrong
Explanation:
A chemical reaction happens when the atoms or molecules rearrange to form a new substance
Acid-base indicator changes color based on pH.
drop some in a solution n watch the color changes. different indicators show different colors at different pH. they usually have standard colors for comparison.
Answer: Motion, providing a burst of power that can move a specific part of the device.
Explanation: Hope this helps