Molecular

What is the SMALL number in a chemical formula known as?

• Coefficient

• Subscript

What number identifies the SUBSCRIPT in the chemical formula: 3CH₄

• 3

• 4

As the temperature of a substance increases:

• The speed, and average kinetic energy of the particles, both increase.

• The speed, and average kinetic energy of the particles, both decrease.

• The speed of the particles increases, but the average kinetic energy of the particles decreases.

• The speed of the particles decreases, but the average kinetic energy of the particles increases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

_______ is an explanation of how particles in matter behave

• Boyle's Law

• Charles' Law

• Kinetic Molecular Theory

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The more energy that particles have, the ___ they move.

• slower

• faster

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The force of attraction between molecules is ___.

• intermolecular forces

• bridge forces

• chemical bonds

A hypothetical gas that perfectly fits all the assumptions of the kinetic molecular theory is known as

• real gas

• ideal gas

• imaginary gas

• perfect gas

The movement of gas molecules is greatly affected by _________.

• the shape of the container

• size of the container

• temperature of the container

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The particles in a gas are ______ away from each other than the particles in a solid

• farther

• closer

• the same distance

At what temperature do nitrogen molecules move fastest?

• 350 K

• 300 K

• 250 K

• 200 K

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4