14.1 - Matter and Thermal Energy(15pts.)

Liquids which keep some ordered structure are ​ (a)   .

• Liquid Crystals

• Solids

• Amorphous Solids

• Gases

Answer explanation

Liquids which keep some ordered structure are Liquid Crystals.

Tags

HS-PS1-3

Organize these options into the right based on the state of Matter.

Groups:

(a) Solid

,

(b) Liquid

,

(c) Gas

,

(d) Plasma

• 
• 
• 
• 

Tags

HS-PS1-3

What are the assumptions made by the kinetic theory of gases?

[Select all that apply]

• All matter is composed of tiny particles. (atoms, molecules or ions)

• Particles are in constant, random motion.

• The particles collide with each other and the walls of the container in which they are in.

• The energy lost from collisions with each other and the walls, is negligible.

Answer explanation

The assumptions of the kinetic theory of gases include that all matter is composed of tiny particles, particles are in constant random motion, particles collide with each other and the walls of the container, and the energy lost from collisions is negligible.

Tags

HS-PS1-3

Water has a few special properties that make it necessary for life. What property was discussed in this lesson?

• When water freezes it is more dense, so it floats.

• When water freezes it is less dense, so it floats.

• When water freezes it is more dense, so it sinks.

• When water freezes it is less dense, so it sinks.

Answer explanation

Water freezes to form ice, which is less dense than liquid water, causing it to float. This property is essential for aquatic life as it insulates the water below, allowing life to survive in cold temperatures.

Tags

HS-ESS2-5

This graph shows how (a)   changes as​ (b)   . Notice the two areas where the temperature does not change. At 0^o Ice is ​ (c)   . All of the ​ (d)   put into the ice at this temperature is used to overcome the ​ (e)   between the particles.

• temperature
• heat is added
• melting
• energy
• attractive forces

Tags

HS-PS1-3