Lesson 2.2 Quiz RCSCC 9/19/23

When Amanda poured some liquid in a test tube, she noticed that the edges of water curved upward, which is an example of

• adhesion

• cohesion

• solute

• hydrogen

When Pol filled another test tube to the top, the liquid formed a low dome, which is evidence of

• cohesion

• adhesion

• solute

• hydrogen

When Amanda added table salt to the first test tube and shook it, she noted that the liquid had dissolved the

• solute

• hydrogen

• neutral

• water

All of these observations indicated the presence of

• acid

• hydrogen

• neutral

• water

Pol determined that pH of the sample is 7, which shows the sample is

• solute

• neutral

• water

• hydrogen

Based on all the evidence Amanda and Pol gathered, the unkown liquid is

• solute

• hydrogen

• neutral

• water

Tags

NGSS.MS-PS1-2

REMEMBER

THE TWO PROTONS IS HYDROGEN

THE BIG OXYGEN IS NEGATIVE

• asssd

• asd

• asd

• asd

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-1

Which of the following observations BEST demonstrates water's special property of cohesion?

• A spoon held near of water from a tap deflects the water towards itself.

• A rainbow forms after a rain storm.

• Water forms droplets of dew on a spider web in the morning.

• Water can dissolve other substances, such as sugar and salt.

Blood is a mixture of a variety of materials. Some of the materials are dissolved in the fluid portion of blood. Other materials, such as blood cells, do not dissolve but move along with the blood

• a solvent

• a solution

• a suspension

• a buffer

Tags

NGSS.MS-PS1-2

Buffers are________ that can react with strong acids and bases

• weak acids or weak bases

• keep solutions neutral