Chemistry: Precision & Design - Chapters 7-8

Aiden is playing his guitar and notices that the louder he plays, the more the strings vibrate. What can the amplitude of the wave produced by the guitar strings be considered a measure of?

• strength

• speed

• frequency

• wavelength

Which of the following statements best explains why the 4s orbital fills before the 3d orbital?

• The orbitals fill in order of increasing n+1.

• The electrons' attraction for the nucleus pulls the 4s orbital inward.

• Orbitals' letters were chosen so the orbitals fill in reverse alphabetical order.

• Electron repulsion causes energy overlap between the electron shells.

Modified T/F:

When Kai and Nora were at the beach, they noticed that the high points of the waves were called crests.

Modified T/F:

During a science class, Mia explained that the theory which describes light as consisting of tiny 'packets' of energy, exhibiting both particle and wave characteristics, is known as the matter wave theory of light.

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NGSS.HS-PS4-3

Noah is doing a science experiment and needs to choose a halogen for his project. Which of the following should he choose?

• xenon

• iodine

• oxygen

• None are halogens.

Luna is observing the colors of a rainbow. She notices that as the colors shift from red to violet, the wavelength of the light waves decreases. As a result, the frequency of the light waves must ______.

• decrease

• remain the same

• increase

• fluctuate

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NGSS.HS-PS4-1

Nora is observing the colors of a rainbow. She notices that as the colors shift from red to violet, the wavelength of the light decreases. How must the frequency of the light change as the wavelength decreases?

• decrease

• remain the same

• increase

• fluctuate

Tags

NGSS.HS-PS4-1

In a science class, Samuel observes the lines in the hydrogen spectrum, which represent photons emitted as electrons drop from higher to lower ______ levels.

• energy

• frequency

• wavelength

• amplitude

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-1

Modified T/F:

When Mia observed an element being vaporized and heated in a flame during her chemistry experiment, she noted that the light emitted forms a continuous spectrum

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NGSS.HS-PS4-3

Grace, Kai, and Benjamin are comparing different elements for their science project. They want to know which of the following atoms would you expect to be the smallest?

• Sr

• S

• Ge

• Al