CCRA Science

What do photoelectric materials do when exposed to light?

• Absorb electrons

• Emit electrons

• Absorb photons

• Emit photons

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How do atoms in the periodic table organize?

• Vertically by atomic mass

• Horizontally by electron configuration

• Horizontally by atomic number

• Vertically by chemical properties

What does the availability of energy determine in a system?

• The system's stability

• The system's complexity

• The system's behavior

• The system's efficiency

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How do forces at a distance operate?

• Through direct contact

• Through electromagnetic fields

• Through gravitational waves

• Through chemical bonds

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The Law of Conservation of Mass States

• Energy cannot be created nor destroyed, it can only change form.

• Mass cannot be created nor destroyed, it can only change form.

• Mass can be created or destroyed, it cannot change form.

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Which factors increase the rate of a reaction.

• increasing temperature

• increasing concentration

• increasing surface area

• all of these

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Increasing the ____ causes the particles (atoms

or molecules) of the reactants to move more quickly so that

they collide with each other more frequently and with more

energy.

• Catalyst

• Surface Area

• Temperature

• Concentration

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As you move down the periodic table atoms get bigger.  This is because ____________.

• The atoms have more mass.

• The atoms have more protons.

• The atoms have more energy levels

• The atoms have more nuetrons

What is the atomic number of oxygen?

• 5

• Sandwich

• 8

• 17

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Who was Dimitri Ivanovich Mendeleev?

• Periodic table inventor

• Sandwich

• A singer

• An Astronomer

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