Answer:
A compound is a unique substance that forms when two or more elements combine chemically. Compounds form as a result of chemical reactions. The elements in compounds are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions that share or transfer valence electrons
Answer:
Explanation:
When 2 or more elements combine a compound stats to form. These are held together with a very strong chemical bond (which can vary depends on the elements). This chemical bond makes all of these little ions come to it and thats how a chemical reaction is made.
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In which situation would osmosis most likely occur in cells?
Across a semi-permeable membrane that separates solutions of the same concentration
Across a semi-permeable membrane that separates solutions of the same concentration
Across a semi-permeable membrane that separates solutions of different concentrations
Across a semi-permeable membrane that separates solutions of different concentrations
Across a non-permeable membrane that separates solutions of the same concentration
Across a non-permeable membrane that separates solutions of the same concentration
across a non-permeable membrane that separates solutions of different concentrations
Across a non-permeable membrane that separates solutions of different concentrations
Answer:
it would most likely occur
———————————————————————————————————————
Across a semi-permeable membrane that separates solutions of different concentrations
———————————————————————————————————————
this is because osmosis is the ‘net’ movement of molecules from a ‘region’ of ‘higher concentration’ to a ‘region’ of ‘lower concentration’ ‘down the concentration gradient’.
Sand and gravel in a mixture have the same properties as sand and gravel when they are not mixed.
Since gravel is bigger than sand,
A.
the sand and gravel can never be separated.
B.
the sand and gravel can be separated with a sieve.
C.
the mixed sand and gravel will stick together.
D.
the mixed sand and gravel have a lower volume.
Answer:
b
Explanation:
There are two types of mixture, one is homogeneous mixture and other is heterogeneous mixture. Therefore, the correct option is option B that is the sand and gravel can be separated with a sieve.
What is mixture?When two or more compounds are combined but each ingredient retains its chemical identity, the result is referred to as a mixture. In other words, there is no chemical interaction between the parts of a combination. According to how consistent they are and how well the components' particle sizes match up, mixtures are categorized.
Sand and gravel in a mixture have the same properties as sand and gravel when they are not mixed. Since gravel is bigger than sand, the sand and gravel can be separated with a sieve.
Therefore, the correct option is option B.
To know more about mixture, here:
https://brainly.com/question/12160179
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A tall pea plant (Tt) is crossbred with another tall pea plant (Tt). The following Punnett square shows the separated alleles for two pea plants.
Which of the following shows the correct match of the box numbers and the genotype of the offspring?
Btw graph is below (ScreenShot)
Answer:
B.
Explanation:
when you use punnett squares, you cross the different genes with themselves. if T is in the first box on both sides, the genome will be TT. if the box lines up to tt, it will be tt. the boxes on the left use the genes' first letter and the boxes on the right use the second letter.
The result of the cross between Tt and Tt would be TT, Tt, Tt, tt.
Monohybrid crossingThis is a kind of crossing involving only one trait.
The genotype Tt will segregate to T and t respectively.
Crossing Tt and Tt:
Tt x Tt
TT Tt Tt tt
Thus, box 1 will contain TT, box 2 will contain Tt, box 3 will contain Tt, and box 4 will contain tt.
More on monohybrid crossing can be found here: https://brainly.com/question/15314052
what is a chemical change of a juicy burger and a waffle fry
there needs to be more info
Arrange carbon, phosphorus and sulfur in order of reactivity to write their reaction with oxygen.
Answer:
Solid phosphorus reacts with gaseous oxygen to produce solid diphosphorus pentaoxide. ... Methanol burns in oxygen to produce carbon dioxide gas and water vapor.
Explanation:
Solid phosphorus reacts with gaseous oxygen to produce solid diphosphorus pentaoxide. ... Methanol burns in oxygen to produce carbon dioxide gas and water vapor.
Please help me I don't know these.
Answer:
Add x on all of them I just took what ur taking rn !!!!!
Explanation:
because the other guy said the same thing
Refer to the question above to help answer this question. If the students were to redo their experiment with the water and the antiacid tablet, what would you recommend they do in order to show that the mass was conserved in that chemical reaction.
a. They should put a cover on the beaker so nothing can escape during the experiment.
b. They should use two antiacid tablets instead of one.
c. They should use more water.
d. They should get a new scale and double check their measurements.
Answer:
hrsseWFEwdS
Explanation:
Are the properties of a specific element the same as the properties of a molecule made up of that element? Why or why not?
please help!!! I'm confused.
Answer:
no molecule and properties or defent
In your own words, explain the difference between how a ‘dam system’ transforms hydropower into electrical energy compared with how a ‘run-of-the-river system.
Which of the following is a true statement about waves?
A.
Waves can transfer energy when they interact with matter.
B.
Waves are never affected when they interact with matter.
C.
All waves require a medium through which they can travel.
D.
All waves travel longitudinally and compressionally at the same time.
Answer:
A.
Explanation:Waves can transfer energy when they interact with matter.
name and the number of atoms of calium oxide in one molecule of the compound for
pls help I am dead if I dont do it for 2 min
Answer:
1 calcium, 2 oxygen and 2 hydrogen makes for a total of 5 atoms in 1 molecule.
Explanation:
3. Is Pangaea the only “supercontinent” that scientists think has existed?
Answer: No
Explanation:
Pangea is the most RECENT supercontinent. However, scientists believe there have been many more that have come before it
Answer:
the first 1 :l
Explanation:
When your muscle gets tired, it builds up the _______ and makes it more powerful.
A.
momentum
B.
blood
C.
cells
D.
tissue
I need help with a DNA research paper
Answer:
XD ok wheres the paper
Explanation:
Calculate the mass of an object that has a density of 20 g/mL and a volume of 5 mL.
Answer:
4
Explanation:
density= mass/volume
Answer:
100kg
Explanation:
[tex]density= mass/volume[/tex]
using this formula you can re arrange the equation my moving the volume onto the opposite side
giving you this formula : mass= density x volume
in doing so you can calculate the mass of the object by extracting the relevant information of the question
density=20g/ml
volume=5ml
mass = density x volume
=20 x 5
= 100
………… is the Energy stored in chemical bonds.
Answer:Energy, potential energy, is stored in the covalent bonds holding atoms together in the form of molecules. This is often called chemical energy. ..
Explanation:This movement is a form of kinetic energy, and the more the molecules move the more kinetic energy they have. Molecules in solids don't move much, they just vibrate
Answer:
ANS is potential energy
Hope it helps