Unit 4 Chemistry

What is the VSPER Shape of the pictured molecule?

• Trigonal Pyramidal

• Trigonal Planar

• Linear

• Tetrahydral

Which compound contains only London Dispersion Forces and Dipole-Dipole IMFs?

Tags

NGSS.HS-PS1-3

Evidence of a chemical reaction is anything that shows

• a new substance has formed

• a solid dissolved in a liquid

• interaction between 2 gases

• a change in the state of matter

Tags

NGSS.MS-PS1-2

One of the signs of a chemical reaction taking place is:

• Bubbles are produced

• Reactants are not combining

• Products are not forming

• Color is not changing

Tags

NGSS.MS-PS1-2

Which is NOT an indication of a chemical change?

• temperature change

• formation of a precipitate

• shape change

• production of light

Tags

NGSS.MS-PS1-2

You know you a chemical reaction has occurred if

• there is a precipitate.

• there is a color change.

• there is a temperature change.

• All of these answers are evidence.

Tags

NGSS.MS-PS1-2

Which of the following is an example that includes evidence of a chemical reaction?

• A sample of zinc is placed in water and it settles to the bottom

• A solid block of ice is heated and it completely melts into a liquid.

• Sugar that is burned gives off an odor and turns brown and then black.

• A tomato is placed into a blender and chopped up into smaller pieces.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Jonathan places a pot of water on a stove. As the water boils, how does the state of the water change?

• from gas to liquid

• from liquid to gas

• from liquid to solid

• from solid to liquid

Tags

NGSS.MS-PS1-4

When thermal energy is decreased in a liquid, what change in state is happening?

• Melting

• Freezing

• Condensation

• Evaporation

Tags

NGSS.MS-PS1-4

Which state of matter would a bulk substance with this composition probably be found in?

• solid

• liquid

• gas

• plasma

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

NGSS.MS-PS3-4