1. Form a hypothesis: Look at the first three rows of the periodic table below.

Ne

ge

Na Mg

B

Al

C N

Si P

O

S

F

a

Why do you think the elements are arranged the way that they are?

The sum of all the potential energy and kinetic energy is an object is equal to its A-thermal energy B-kinetic energy C-potential force D-force

3. The half-life of a radioactive atom is two months. If you start with lg of the element, how much will remain after six months? A. One-half of a gram will remain. B. One-fourth of a gram will remain. C. One-eighth of a gram will remain. D.

Rank the following from greatest energy to the least: a. A stationary 2kg ball 2m off the ground. b. A stationary 1kg ball 1.5m off the ground. c. A 1kg ball moving 3m/s, 2m off the ground. d. A 2kg ball moving 4m/s, 1.5 off the ground.

What kind of molecule is water?

You throw a ball at 37° above the horizontal and you want to hit a target on the ground, 20 ft from where you are standing. How fast should you throw the ball? What will be its final velocity?

How much work can be done by a 300 w motor in 60 sec?

What is the protoplanet theory

Moving a charged object against an electrical force causes it to

What is the wavelength of a sound wave with a frequency of 50hz (speed of sound is 342 m/s?

What was Galileo's contribution to the study of motion?