Chemistry 1
Chemistry 2
Chemistry 3
Chemistry 4
Chemistry 5
100

What are the elements in Group 18 called ?

Noble Gases

100

How many electrons are in the 3rd energy level?

18

100

How many sig figs in:

0.0100L

3

100

How many sig figs does the following measurement have: 4,007 ml

4

100

Name all 3 subatomic particles.

Protons Neutrons Electrons

100

What number do you use to find the number of protons?

atomic number

100

What are the 3 main states of matter?

Solid, liquid, gas

100

What is the 25th element called?

Manganese or Mn



100

C-14 has how many neutrons?

8

100

What is the formula for density?

Density = Mass/Volume (Mass over volume)

200

How many periods are shown on the periodic table?

7

200

What is the atomic number of neon (Ne)?

10

200

How many sig figs does the following measurement have: 0.9800460

7 (the zero on the right counts because there's a decimal!)

200

What early model of the atom did Thomson develop that involved a lump of positive charge with electrons stuck to it?

Plum-Pudding Model

200

What is a valence electron?

Electron in the outermost energy level

200

How are ions formed?

By losing or gaining valence electrons

200

A negatively charged ion


Anion

200

State the electron configuration of  Ca

1s2 2s2p6  3s2   3p 4s2

200

The Oxide ion has  _____e-

10 e-

200

The sum of protons and neutrons in the nucleus of an atom is known as the _________

Mass number

300

When moving from left to right across the periodic table, what increases?

Atomic Number

300

Where are the electrons in the Quantum model of the atom?

Probably in the energy levels 

300

What is in the nucleus in the atom?


protons and neutrons




300

Elements with the same number of protons but different number of neutrons 

Isotope

300

Will oxygen accept or donate electrons? How many?

Accept two electrons

400

Mr. Gonzalez uses propane, C3H8 to fire up his grill to bbq for his friends. Little does he know, his chemistry students know more about this molecule than he thinks.

 State the original name of this molecule.

Tricarbon octahydride 

400

What is the mass of NaCl?

23g + 35g = 58g

400

How many unshared electrons does a molecule of CF4

have?

4 x 6 = 24 unshared electrons

400

A neutral atom in the ground state has the electron arrangement of 2, 8, 18, 7 in its electron shells.

Bromine

400

Fluorine, chlorine, bromine, and iodine belong to the family of ______________

halogens

500

The synthesis of element 118 was reported recently by a collaborative team of 30 scientists from the United States and Russia. 

Write down the electron configuration for the newly synthesized element. Use the abbreviation scheme in which inner core electrons are represented using the appropriate noble gas...for example, the electron configuration for Li is [He]2s1


[Rn]7s2 5f14 6d107p6

500

Elements in Group 2A form ions with a charge of ___

+ 2

500

A flask that weighs 345.8 g is filled with 225 mL of carbon tetrachloride (CCl4). The weight of the flask and carbon tetrachloride is found to be 703.55 g. From this information, calculate the density of carbon tetrachloride.

1.59 g/mL

500

CS2 has a __________shape according to VSEPR

linear

500

Which of the following is always nonpolar?

H2O     NH     CBr3F        I2

all diatomic molecules are always nonpolar - I2