sem. Unit 2 review

How would you write the following number using scientific notation?

45,800,000 mL

• 4.58 x 10^7

• 458 x10^7

How would you write the following number using scientific notation?

0.004506 mL

A 20 kg bike accelerates at 10 m/s2. what was the force

F = m x a

• 25 Newtons

• 20 Newtons

• 200 Newtons

• 10 Newtons

Tags

NGSS.MS-PS2-2

Which of the following types of radiation has the shortest wavelength and the highest frequency?

• Radio Waves
• Infrared
• Visible
• X-Rays

Tags

NGSS.HS-PS4-1

Natural Selection says that within a population there will be _________________________

• nothing different

• variation/differences

Tags

NGSS.MS-LS4-4

The smallest part of an element is

• proton

• atom

• compound

• mixture

If the substance is neutral, what would the pH be?

• 3

• 5

• 7

• 9

• 11

The strongest bases have pH values close to

• 0

• 14

• 7

• 5

Tags

NGSS.MS-PS1-2

If an atom has 3 electrons, how many protons does it have?

• 1
• 2
• 4
• 3

What is at the center of every atom?

• An electron
• A compound
• A molecule
• A nucleus