CBA Review

Multiple Choice

Given the work of Dalton, choose the postulates of Dalton’s Atomic Theory below that have since been proven to be incorrect.

• Matter is composed of extremely small particles called atoms.

• Atoms of specific element are different from atoms of other elements.

• All atoms of a specific element are identical.

• In a chemical reaction, atoms are separated, combined, or rearranged.

Multiple Choice

What does the Cathode Ray Tube demonstrate about the behavior of electrons when electricity is passed through it?

• Electrons are attracted to the positive end

• Electrons are repelled by the positive end

• Electrons do not move

• Electrons are attracted to the negative end

Multiple Choice

Rutherford's gold foil experiment provided evidence that...

• negative and positive charges are spread evenly throughout the atom.
• alpha particles have a positive charge.
• gold is not a dense as previously thought.
• there is a dense positively charged nucleus at the center of an atom.

Reorder

Place the following atomic models in order, from earliest to latest:

• Dalton (Solid Sphere)

• Thomson (Plum Pudding)

• Rutherford (Nuclear)

• Bohr (Planetary Model)

• Schrodinger (Quantum)

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Fill in the Blank

What is the mass number of an atom with 15 protons and 14 neutrons?

Multiple Choice

In the picture, the ball being held has a lot of _______ energy and zero _____ energy.

• Potential; Kinetic
• Kinetic; Potential

Multiple Choice

What does temperature measure in a substance?

• The average kinetic energy of the particles

• The total mass of the particles

• The volume of the substance

• The pressure of the substance

Reorder

Reorder the following to show how ice in your glass would reach equilibrium with the water in the glass.

• Ice is added to warm water.

• The warm water molecules hit the ice.

• The ice molecules take heat from the warm water.

• As the ice gains heat the particles move faster and it melts.

• The ice and water molecules reach equilibrium, they are the SAME temperature.

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Multiple Choice

From point A to point F, the sample is going through an __________ process by __________.

• exothermic, releasing heat to the surroundings

• exothermic, absorbing heat from the surroundings

• endothermic, releasing heat to the surroundings

• endothermic, absorbing heat from the surroundings

Multiple Choice

Particles of a liquid

• are tightly packed together and stay in a fixed position.

• are free to move around one another but still touch.

Categorize

Options (6)

melting

vaporization

sublimation

condensation

deposition

freezing

Organize into which phase changes are endothermic and exothermic processes

Endothermic

Exothermic

Multiple Select

Dmitri Mendeleev stated that if the elements were listed in order of increasing __(2)__, _

• Atomic number

• Atomic mass

• periodic table

Multiple Choice

I am a British scientist who came up with today's periodic table of elements that is based on ATOMIC NUMBER. Who am i?

• Henry G.J Mosely

• J.J Thomson

• Erwin Schrodinger

• John Dalton

Multiple Choice

What are the characteristics of Alkali Metals?

• Most reactive metals

• Lose 1 electron

• Combine with Halogens to form salts

• All of the above

Multiple Choice

What is the electron configuration of Silicon?

• 1s2 2s2 2p6 3s2 3p2

• 1s2 2s2 2p6 3s2 3p1

• 1s2 2s2 2p6 3s2 3d2

• 1s2 2s2 2p6 3s2 3p3

Hotspot

Click on the partial negative area of H2O.

Match

Match the following

Bent

Trigonal Planar

Tetrahedral

• Bent

• Trigonal Planar

• Tetrahedral

Multiple Choice

Ionic bonds are formed when electrons get

• Shared between two atoms

• Removed from both atoms

• Transferred from one atom to another

• Added to both atoms

Drag and Drop

A covalent bond occurs when elements ​

Placeholder

their outermost energy shell's ​

Placeholder

to complete their ​

Placeholder

Drag these tiles and drop them in the correct blank above

share

electrons

octet.

transfers

Match

Match the following

• crest

• amplitude

• wavelength

• Trough

• wavelength

A

C

B

D

E

• A

• C

• B

• D

• E

Math Response

Calculate the molar mass of SO₃

Type answer here

Correct Answer: 80.07

Deg^°

Rad

Multiple Choice

What three variables are in the Ideal Gas Law?

• Pressure, Temperature, Volume

• Pressure, Kelvin, # of moles

• # of moles, Temperature, Volume

• Volume, Heat, and Greenhouse Gases