1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
olga nikolaevna [1]
3 years ago
8

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

of __________
.
When Pol filled another test tube to the top, the liquid formed a low dome, which is evidence of ___________
.
When Amanda added table salt to the first test tube and shook it, she noted that the liquid had dissolved the __________
.
All of these observations indicated the presence of _______
bonds.
Pol determined that the pH of the sample is 7, which shows the sample is ________
.
Based on all of the evidence Amanda and Pol gathered, the unknown liquid is_______
.
WORD BANK:
acid
adhesion
base
cohesion
covalent
hydrogen
ionic
neutral
solute
solvent
vinegar
water
Biology
2 answers:
Elenna [48]3 years ago
4 0

Answer:

adhesion

cohesion

solute

hydrogen

neutral

water

Explanation:

Water molecules adhere (adhesion) to unlike surfaces  due to the presence of hydrogen bonds between the molecules. The capacity to from adhesion with unlike molecules is what makes ionic compounds (solutes) to be soluble in water. The adhesive force makes water to curve upward in a test tube. Pure water has a neutral pH of 7.

Some liquid molecules like mercury molecules have strong cohesive force holding the molecules together and therefore will not stick to surfaces of unlike molecules. That is why such molecules will form a low dome when poured into a test tube.

weeeeeb [17]3 years ago
3 0

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

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

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

All of these observations are suggesting the existence of covalent bonds.  

Pol determined that the pH of the sample is 7 that indicates that the sample is neutral.  

Based on all the proof gathered by Pol and Amanda, the unknown liquid is water.


You might be interested in
A protein is a polypeptide of at least 50 amino acids that also has what characteristic?
Alisiya [41]
I think it is 60 i believe so
3 0
3 years ago
Do fish ever get thirsty?
Gelneren [198K]
No because they live in the water so therefore they cant get thirsty lol 
5 0
3 years ago
Read 2 more answers
The cholera bacterium produces toxins that cause chloride ions to be secreted into the small
Murrr4er [49]

Answer:

Osmosis occurs where the movement of water move from a region of high water potential to a region of low water potential.

The water potential in blood capillaries need to be higher than the water content in intestinal so that the water will move from blood to intestine which cause diarrhea.

5 0
2 years ago
The first one will be the brainest
just olya [345]
<h2>Cell Analogy</h2>

Explanation:

  • Nucleus: Parents

As we see that parents control everything in the house. Similarly,the nucleus controls everything in the cell.

  • Cell membrane: Door

A door is analogous to the cell membrane because it allows people come and go. Similarly,the cell membrane in a cell can allow certain things to enter and exit.

  • Cytoplasm: Air

The cytoplasm fills the space in a cell. It is similar to air which is filled everywhere in the house.

  • Nuclear membrane: Security guard

The nucleus in a cell is protected by nuclear membrane. The nuclear membrane is analogous to secuity guard. As people in a house are protected by security guard, similarly nucleus is protected by nuclear membrane.

  • Endoplasmic reticulum: Hall ways

Endoplasmic reticulum transport things to other places in the cell. It is similar to hallways which help us to reach different places in the house.

  • Golgi bodies: Car

The golgi bodies modify,sort and package proteins.

It send them to other parts of the cell when needed.

It is similar to a Car which transports people and can store stuffs.

  • Mitochondria: Stove

The mitochondria in a house is analogous to Stove as it breaks down nutrients and turns them into energy. Similarly, the Stove in our house, cooks foods and it is converted into energy when consumed.

  • Ribosomes: Kitchen

The ribosomes are a cell structure that make protein. It is same as a kitchen in our house where people make food or proteins.

7 0
3 years ago
Mike is doing a project for science class. He is making an analogy of a cell and relating it to the structure and function of a
Darya [45]
I think the power plant because the mitochondria makes the atp?
7 0
3 years ago
Read 2 more answers
Other questions:
  • A student sets up an experiment and wants to see if different amounts of fertilizer affect the growth of basil. They place 4 sep
    12·1 answer
  • Which organ is responsible for most of the absorption of nutrients into the body?
    10·1 answer
  • Plz help mee!!(20) points
    12·2 answers
  • We can classify both the shovel and the garden trowel as compound machines. This is because each garden tool contains two simple
    9·2 answers
  • Why is it necessary for cells to maintain homeostasis? Choose the correct answer.
    5·2 answers
  • This is the main energy storage and transfer molecule in the cell
    10·2 answers
  • 10. Brown pelicans are fish-eating birds. As a result of an El-Nino event, the population of brown pelicans in southern Californ
    6·1 answer
  • List three primary categories of freshwater use.
    10·1 answer
  • How are the
    13·1 answer
  • Which type of rock would form if the sandstone rock in this image were put
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!