1. a substance with a pH of 3

2. a substance with a pH of 10

3. a substance with a pH of 7

4. an indicator

5. a scale that represents the concentration of H30+, 0-14

A.) phenolphthalein

B.) base

C.) pH scale

D.) neutral

E.) acid

A bike travels 35A bike travels 35.896 meters in 6.25 seconds. The average speed is then calculated. How many significant figures should be in the resulting calculation? A. 2 significant figures B. 4 significant figures C. 3 significant figures D.

Objects with greater mass tend to fall faster on Earth than objects that are less massive, because of air resistance. A. True B. False

An electron travels with speed 6.0*10^6 m/s between the two parallel charged plates shown in the figure. The plates are separated by 1.0 cm and are charged by a 200 Volt battery.

You poll students on whether they prefer hotdogs, chicken fingers, salad, or spaghetti for lunch. Which graph would you use to show your results? A. Bar graph B. Line graph C. Cumulative frequency graph D. Histogram SO

When stopping at a railroad crossing, you should be no closer than?

Express 9.39 x 109 seconds in terms of days

What is the energy equivalent of 5.0 kg of mass? be sure to show all work to support your answer?

An ant carries food at a speed of 1 cm/s. How long will it take the ant to carry a cookie crumb from the kitchen table to the ant hill, a distance of 50 m? Express your answer in seconds, minutes and hours.

What must you know in order to determine the gravitational force between two objects?

When seen from an airplane, a rainbow sometimes forms a complete circle. When this happens, the plane's shadow is a. in the center of the rainbow. b. totally outside the rainbow. c. in the upper part of the rainbow. d. Nowhere. There is no shadow. e.