Kinetic Molecular Theory/Atomic Theory Review

A student is creating a model of an atom using the materials shown. Based on the relative masses of sub-atomic particles, which would be the best material to represent the electrons in the model of an atom?

• Paper plate

• Small plastic beads

• Rubber bouncy balls

• Tennis balls

Tags

NGSS.MS-PS1-1

Which is a scientific theory?

• A logical explanation based in scientific evidence and data of WHY things happen the way they do

• An educated guess based on an observation

• A statement that predicts WHAT will happen in a way that can be expressed with math and mathematical formulas to show relationships

Tags

NGSS.MS-LS4-2

How does atomic theory demonstrate the nature of science?

• The atom makes up all matter

• The atom contains a nucleus

• The model of the atom changed over time due to new information.

• The model of the atom was always the same. It never needed updates.

Tags

NGSS.HS-PS1-8

According to the diagram shown, on what letter would a solid be found?

• A

• C

• D

• E

Tags

NGSS.MS-PS1-4

If a substance changes from the phase in E to the phase in C, it is becoming—

• hotter

• colder

• drier

• warmer

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The nucleus of an atom has an overall charge of—

• positive

• negative

• neutral

• zero

Tags

NGSS.HS-PS1-8

Compared to the entire atom, the nucleus of an atom is—

• smaller and contains most of the atom’s mass

• larger and contains most of the atom’s mass

• smaller and contains little of the atom’s mass

• larger and contains little of the atom’s mass

Which statements are true about the atomic structure?

• Protons are positively charged.

• Electrons are the heaviest subatomic particle.

• Most of the atom is empty space.

• Neutrons have a negative charge.

• Most of an atom's mass comes from the nucleus.

If thermal energy is added to a solid, the temperature will ______ and the solid will turn into a ______.

• Increase, liquid

• Decrease, gas

• Stay the same, solid

• Decrease, liquid

Tags

NGSS.MS-PS1-4

Using the diagram shown, which statements are correct?

• Number 3 could be either a proton or neutron

• Number 1 is an electron

• Number 2 either has a positive or neutral charge

• Number 1 has a neutral charge

• Number 2 has a negative charge

Tags

NGSS.MS-PS1-1