Chemistry 9/13/23

Reorder the following from lowest average kinetic energy to highest average kinetic energy.

• Gas

• Solid

• Plasma

• Liquid

• Bose-Einstein Condensate

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Reorder the following atomic theories into a timeline from oldest to most current.

• Nuclear Model

• Plum Pudding model

• There are atomos

• Quantum Model

• Planetary Model

Match the following scientist with the atomic theory he founded.

• The Quantum Model

• Rutherford

• The Plum Pudding Model

• John Dalton

• The Nuclear Model

• Bohr

• The atom is like a ball.

• JJ Thomson

• The Planetary Model

• Schrodinger

Tags

NGSS.MS-PS1-5

How many significant figures are in the number, 4.300E-2 cm?

• 1

• 2

• 3

• 4

A ​ (a)   exhibits particle motion with one degree of freedom. This motion is called ​ (b)   motion. When this state of matter is subjected to increased kinetic energy, it will phase change into a ​ (c)   , in which particles have ​ (d)   degrees of freedom.

• solid
• vibrational
• liquid
• two
• three
• rotational
• translational
• gas
• zero

Tags

NGSS.MS-PS1-4

Label the picture with the appropriate symbols.

a

b

c

atomic number

element symbol

mass number

Convert 4,514 cg into kg and report the answer in scientific notation with two sig figs.

• 4.5E4 kg

• 45E2 kg

• 0.045E-2 kg

• 4.5E-2 kg

Calculate the correct answer for 9.3321 kg x 0.145g. Report your answer in mg (do not use scientific notation)

The numbers of protons, neutrons, and electrons in K-39 are:

• 20p, 19n, 19e

• 20p, 19n, 20e

• 19p, 20n, 19e

• 19p, 20n, 20e

Tags

NGSS.MS-PS1-1

Which statement is INCORRECT?

• An atom of Zn-60 has an equal number of protons and neutrons

• An atom of Mn-50 has an equal number of electrons and neutrons

• An atom of O-18 has an equal number of protons and neutrons

• An atom of K-41 has an equal number of protons and electrons

• An atom of U-238 has 146 neutrons.

Tags

NGSS.MS-PS1-1