2021 Chem for week of 29th

During which changes of state do atoms overcome the attractive forces between them?

• vaporization and sublimation
• condensation and melting
• boiling and deposition
• freezing and condensation

Which is a characteristic of atoms?

• They come in ten major types.
  
• They are the smallest units of matter
• They can be divided by ordinary chemical means into smaller particles
• They cannot be combined

A can of tomatoes has a radius of 6 cm and a height of 10 cm. What is the approximate volume of the can?

• 36 cm cubed
• 60 cm cubed
• 113 cm cubed
• 1,130 cm cubed

Riley wants to measure the mass and volume of a key. Which tools should she use?

• a balance and a beaker of water
• a balance and a meter stick
  
• a beaker of water and a ruler
• a ruler and a meter stick
  

An object of the same mass has three different weights at different times. Which statement is possible?

• The object gains matter and then loses it.
  
• The object started on Earth, was transported to space, and was deposited on the moon.
  
• The object started at the bottom of a hill, then moved to the top of the hill, and then moved back down to the bottom of the hill.
• The object changes shape, which changes its weight.
  

Which statement best describes the atoms in a solid?

• They are held together by strong attractions.
• They slide past each other.
  
• They are located far apart.
  
• They spread to fill available space.

Which statement best describes the atoms in a gas?

• They vibrate in place.
  
• They slide past each other
• They move freely in all directions.
• They are closely packed.

Which best describes why a liquid needs a container when a solid does not?

• Solids particles expand to fill their containers, and liquid particles do not.
• Solids particles do not expand to fill their containers, and liquid particles do.
• Solids have definite shapes, and liquids fill their containers.
• Solids fill their containers, and liquids have definite shapes.

On a cool morning, Noah's breath can form a cloud when he breathes out. Which changes of state are most responsible for Noah seeing his breath in this way?

• sublimation and deposition
• condensation and sublimation
• melting and condensation
• vaporization and condensation

Tatum makes a pyramid of oranges for a display at the grocery store. A few minutes later, Chase bumps into the display and the oranges spill down.Which change of state does the motion of the oranges most closely model?

• Melting
• Sublimation
• Evaporation
• Freezing