CCRA Science

What is the relationship between wavelength and frequency of a wave?

• They are inversely proportional.

• They are directly proportional.

• They are unrelated.

• They are equal.

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NGSS.HS-PS4-1

What happens when light is absorbed in matter?

• It is converted into chemical energy.

• It is converted into electrical energy.

• It is generally converted into thermal energy.

• It is generally converted into kinetic energy.

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What is the primary factor determining chemical behavior in elements?

• Atomic mass

• Electron configuration

• Proton count

• Neutron count

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Why must chemical equations be balanced?

• So that the equation doesn't explode

• The reaction won't happen until it is balanced

• Based on the Law of Conservation of Matter, matter cannot be created or destroyed.

• Based on the Law of Conservation of Energy, energy cannot be created or destroyed.e

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Hydrogen, H, is located in group 1 of the periodic table. Chlorine, Cl, is located in group 7A or 17 of the periodic table. Use this information to predict the products of this synthesis reaction: H₂ + Cl₂ →

• HCl

• H₂Cl₂

• H₂Cl

• HCl₂

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A metal cylinder at 95.6⁰C was placed in a cup of water at 22.0⁰C. After 3 minutes the final temperature was 26.8⁰C. How did heat energy flow?

• from the metal to the cup

• from the water to the metal

• from the metal to the water

• heat did not flow

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What does the conservation of atoms enable scientists to do?

• Create new elements

• Describe and predict chemical reactions

• Change the properties of elements

• Eliminate chemical reactions

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What are the fields responsible for forces at a distance?

• Gravitational and magnetic

• Electrical and magnetic

• Gravitational and electrical

• Magnetic and electromagnetic

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In what ways does energy manifest itself at the macroscopic scale?

• Motion, sound, light, and thermal energy

• Electromagnetic radiation only

• Chemical reactions only

• Nuclear reactions only

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What is the consequence of shorter wavelength electromagnetic radiation?

• It cools down matter.

• It ionizes atoms.

• It accelerates chemical reactions.

• It increases electrical resistance.

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