Chemistry Semester Final Review 1

Experimental Design and Valid Measurements

100

In a good experiment how many independent variables will there be.

One.

200

These variable(s) change as a result of what the experimenter changes and is usually what is measured by experimenter.

Dependent Variable

300

These variables are kept constant over the course the experiment.

Controls

400

If a 100mL beaker has markings ever 10 mL what could be a valid measurement that could made with that tool.

Any number between 1-100 listed to the ones place.

500

If a digital thermometer had a reading of 20.1^oC, which of these numbers are certain digits and which of these numbers is estimated by the device.

2 and 0 are certain and the 0.1 is estimated by the device. All should be recoreded.

Atoms and Isotope Symbols

100

In the isotope symbol ¹⁴₆C what does the 6 represent about the isotope.

Atomic number or Number of Protons

200

In the isotope symbol ²³₁₁Na, what does the 23 represent about the Sodium?

Mass Number or amount of Protons and Neutrons

300

In the isotope symbol ³⁷₁₇Cl^- what does the - sign represent about the Chlorines' number of electrons?

It has an additional electron adding negative charge.

400

The isotope named Iron - 56 would have how many neutrons?

30

500

The decimal number for Average Atomic Mass of an element is determined how? Be specific.

Add up the mass of isotope * abundance of isotope for all isotopes.

Electron Configurations

100

In the electron configuration 1s²2s²2p² the large number values (1, 2, 2) represent what or are closely related to what part of the periodic table?

Main Energy Level, or The row.

200

In the electron configuration 1s²2s²2p² the letters (s,p) represent what or are related to what aspect of the periodic table.

Orbitals, different blocks of the periodic table.

300

Adding up all the exponents of an electron configuration will tell you what?

What element it is if its neutral or how many electrons the element/ion has.

400

The electron configuration 1s²2s²2p⁶3s²3p⁴ would represent what neutral element on the periodic table.

Sulfur

500

Provide the correct electron configuration for Iron.

1s²2s²2p⁶3s²3p⁶4s²3d⁶

Geography of the Periodic Table

100

The columns of the periodic table are called. 

Groups

200

The rows of the periodic table are called?

Periods

300

What 4 letters represent different blocks of the periodic table?

s p d f

400

The central elements from groups 3 to 12 are called what?

Transition Metals

500

The pulled out group of elements below the table are called.

Rare Earths or Rare Earth Metals.

Breakfast Cereals by Mascots

100

This popular breakfast cereal has a Tiger as its mascot who comments on the greatness of the cereal.

Frosted Flakes

200

This popular breakfast cereal has a Rabbit as its mascot who consumes the cereal meant for kids.

Trix

300

This popular breakfast cereal has a colorful Toucan as its a mascot.

Fruit Loops

400

This popular breakfast cereal has a Leprechaun as its mascot.

Lucky Charms

500

This popular breakfast cereal has three mascots by the names of Snap, Crackle, and Pop.

Rice Krispies