Generation Genius Atoms and Molecules

Atoms are more than __________ times smaller than the width of a hair.

• 10

• 100

• 1,000

• 10,000

A molecule is made up of _________ or more atoms.

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

What causes atoms or molecules in a substance to vibrate?

• Chemical reactions only

• Adding or removing thermal energy

• The substance being in a solid state

• External physical force

Tags

NGSS.MS-PS1-4

What does temperature measure in a substance?

• The total amount of thermal energy

• The average kinetic energy of the particles

• The speed of the slowest particle

• The vibration frequency of molecules

Tags

NGSS.MS-PS3-4

How do the particles in hotter substances move compared to those in colder substances?

• They move at the same speed

• They move slower

• They move faster

• They do not move at all

Tags

NGSS.MS-PS1-4

What happens to matter when thermal energy is added or removed?

• It does not change state.

• It changes state.

• It becomes less dense.

• It changes color.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why do thermoses use a vacuum to insulate hot liquids?

• Because it causes the liquids to heat up

• Because it allows air molecules to transfer energy quickly

• Because it contains no air molecules to transfer thermal energy

• Because it makes the liquids react chemically

Tags

NGSS.MS-PS3-3

What do chemical reactions that release thermal energy cause in their surroundings?

• Particles to vibrate slower

• Particles to vibrate faster

• Instant cold packs to activate

• Light energy to be absorbed

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-6

Which of the following is an example of a chemical reaction that releases thermal energy?

• An instant cold pack being used on an injury

• A fire burning

• Ice melting on a hot day

• Water freezing in a freezer

What does thermal energy do when it moves from one area to another?

• It causes a substance to change from one state to another

• It decreases the chemical reactions

• It remains constant in the substance

• It increases the mass of the atoms

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4