Fluorine, I still remember this from my science fair
HELP ME PLEASE AND GOOD MORNING
Answer:
I think it is lightning
Explanation:
Lightning creates an electricity and it has lots of energy, so I think that it is lightning
Answer:
Good morning as well! The answer to this question is lightning.
Explanation:
Lightning is a source of electrical energy. Lightning also has a certain amount of voltage. Frozen raindrops bump into each other in the air causing an electrical charge. Therefore, lightning is created.
1) Which diagram shows an element?
2) which diagram shows a mixture?
3) which diagram shows a compound?
4)which diagram only shows atoms chemically bonded together?
5) which diagram shows different atoms of matter physically combined together?
Answer:
r
I think 1 option okkkkkkkkkkkkk
Explanation:
mhfs4trfsetc fthcfeencfgeh,cbwjh vbytbnmdtuh3lg dl5flnfwk3t kqre,fvbt,klkkkjh
What is a common form for synthesis reactions?
a. AB → C
b. A + B → BC
c. C → A + B
d. A + B → C
Answer:
The Best Answer would be B but the correct answer is A+B --> AB
Explanation:
Consider the following incomplete reaction. Mg + 2Y ---> MgCl₂ + H₂ Choose the formula for the missing substance Y.
A. H₂Cl
B. HCl
C. Cl
D. Cl₂
The substance on which the enzyme acts is called the _____ chemical.
A. Substrate
B. Complex
C. Catalyst
Answer:
the answer is A
Explanation:
it is substrates because ,Enzymes are specialized proteins that catalyze or speed up chemical reactions within cells. The substance upon which an enzyme acts is called a substrate. Substrates are small molecules.
The substance on which the enzyme acts is called the substrate chemical. Therefore, the correct option is option A.
Enzymes are biological molecules that function as catalysts, facilitating and speeding up chemical reactions without being devoured or irreparably changed. The term "substrate" refers to the material that the enzyme reacts with.
An enzyme forms an enzyme-substrate complex when it comes into contact with its particular substrate and attaches to it at a location known as the active site. This contact makes the chemical reaction more rapid than it would be in the absence of the enzyme by lowering the activation energy necessary for the reaction to occur.
Therefore, the correct option is option A.
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Which is a better estimate for the volume of a fish bowl?.
1 gallon
1 cup
Answer: 1 gallon
Explanation:
Answer:
1 gallon
Explanation:
because gallons are constisting of cups and 1 cup wont be enough for a fish to swim
Which of the following is true about nuclear fusion
a) it occurs in the sun
b) a heavy atom is split
c) it can be controlled easily
d) an electron is lost by the atom
Answer:
i would assume that it would be (a)
Explanation:
The Sun generates its energy by nuclear fusion
NUCLEAR FISSION is when the heavy atom is split
fusion energy is scientifically feasible. Plasma conditions that are very close to those required in a fusion reactor are now routinely reached in experiments
mass gets lost is nuclear fusion
so (a) is the most accurate
Answer:
it occurs in the sun
Explanation:
just took the test so its A. GL!
hhhhhhhhhhhheeeeeeeelpppppp
Answer:
Solar photons
Hope this helps :)
Becquerel’s experiment consisted of four steps.
1. Get a sample of a uranium salt.
2. Expose the salt to sunlight.
3. Expose photographic plates to the salt.
4. Develop the plates.
A change in which step led to Becquerel’s discovery of radioactivity?
1
2
3
4
Answer its Ccccccccccccccccccccccccc
All bonds release or absorb the same amount of energy
true
false
Help me ASAP !!! Thank youuu
Answer:
uhh the first one is the baby plants are gentically simulator to the parent if its wrong im sorry
Explanation:
A saturated aqueous solution of sucrose contains 200 grams of sucrose and 100 grams of water. Which is the solvent: sucrose or water?
Answer:
The solvent is water
Explanation:
The solvent is the substance in the mixture that is able to dissolve the other substances. The solvent is usually the liquid.
In the problem is said: "A saturated aqueous solution", that means the solution is made by a solute that is in excess (Sucrose) dissolved in the solvent (Water).
The solvent is water
what makes electrons jumo to other orbits around the nucleus then fall again?
Answer:
The higher the excitation state, the more energy the electron contains. When an electron absorbs energy, it jumps to a higher orbital. ... An electron in an excited state can release energy and 'fall' to a lower state.
Answer:
the higher the excitation state, the more the energy the electrons contains. when an electrons absorbs energy , it jumps to a higher orbital.
Explanation:
the electrons with its extra packet of energy becomes excited , and promptly moves out of its lower energy level and takes up a position in a higher energy level
Air,steam and water under pressure are all examples of ___. A)vapors B) nonhazardous materials C)stored energy D) DC power sources
Answer:
a
Explanation:
Air, steam, and water are the different phases of matter, including gas and liquid. Air, steam, and water under pressure are all examples of vapors. Thus, option A is correct.
What are phases of matter?Matter is any substance present in the form of liquid, solid, or gas. They have the property to get converted into another phase of matter under specific pressure and temperature conditions.
The vapor and air are present as an invisible gas, and water is a visible liquid that can be converted into a vapor state under high pressure and temperature condition. The process of evaporation can convert water molecules into vapor. Air and steam are used as vapor under pressure in inhalation devices.
Therefore, option A. the air, steam, and water are vapor under pressure.
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This drawing shows a human body system.
What is the primary function of this body system?
A. The transport of nutrients, water, and oxygen to body cells.
B. The chemical breakdown of food into smaller pieces.
C. The protection of vital organs from injury.
D. The production of hormones that regulate growth and metabolism.
Answer:
This question is incomplete
Explanation:
This question is incomplete because of the absence of the drawing referred to in the question.
However, each option refers to a particular respiratory system and with the organs and the tissues mentioned here one can eventually identify which option is correct when the drawing is available.
A) The system described here is the cardiovascular system (or the circulatory system). This system involves the heart, blood vessels and the blood (which are what help in the transport of the materials mentioned in the question).
B) The system described here is the digestive system. This system involves the gastrointestinal tract and organs (that assist in the production/secretion or storage of chemicals that breakdown food into smaller pieces) such as the mouth, esophagus, stomach, small intestine, large intestine, rectum and the anus.
C) The system described here is the skeletal system. This system involves all the bones and joint in the body (the skeleton) which also helps in protecting organs in the body.
D) The system described here is the Endocrine system. This system involves several internal glands (such as the thyroid gland and the adrenal glands) in the body.
NOTE: Identify which organ and/or tissue is present in the diagram and use that to select the appropriate option from the description of each of the options provided above.
Answer:
b
Explanation:
Which properties do all solids share?
A. Color and fixed shape
B. Color and fixed volume
C. Fixed volume and fixed shape
D. Fixed shape; volume that depends on container
Answer:
c
Explanation:
because when you hold a solid in your hand does it move does it shift no it stays the same so it doesn't take the form of the container it's in cuz that's a liquid.
PLEASEEE HELP me on CHEMISTRY!! Will give brainliest!
Two students plan and carry out an investigation to determine if ionic or covalent bonds have stronger intermolecular forces. They check the following data.
a. identify the type of intramolecular bonds that are involved.
b. Which substance will have the stronger intermolecular forces?
c. Which properties allow you to predict the strength of the intermolecular forces?
Answer:
A Glucose C6H12O6 is a covalent compound while NaCl sodium chloride is a ionic compound.
B Stronger molecular forces are present in NaCl because ionic bond is stronger than covalent bond.
C melting point allow us to predict the strength of intermolecular forces
High melting point stronger molecular forces and vice versa.
Explanation:
Question 2
5 pts
(03.01 MC)
The nucleus of an atom is dense and positively charged. What was observed when
positively charged particles were radiated onto a gold atom during Rutherford's
experiment because of this?
O Negative charges were concentrated at the center of the atom.
N
Particles that struck the center of the atom were repelled.
Particles that struck the edges of the atom were repelled.
Positive charges were distributed all over the atom.
Answer:
The correct answer is particles that struck the center of the atom were repelled.
Explanation:
Rutherford performed an experiment which is called the gold foil experiment. In the gold foil experiment of the Rutherford, a gold foil is bombarded with the positively charged alpha particles. The bombardment of the alpha particles shows the unexpected result to Rutherford.
He thought these particles go through the gold foil but to his surprise, some particles bounced back and some deflected after colliding with foil. On the basis of these, he suggested that there is a positive charge present in the center of an atom that repelled the positive charge of alpha particles and leads to deflection and bouncing back.
Thus, the correct answer is particles that struck the center of the atom were repelled.
23. Select the evidence that Thomson used to conclude his findings.
(a) Electrons become excited with more energy and then release that energy as atomic
spectra.
(b) Performed a series of experiments using pressure, properties of gases, and properties
of compounds.
(c) Battery Passed a cathode ray between positively and negatively charged plates and observed the cathode ray attracting to the positively charged plate.
(d) Bombarded a thin layer of gold foil with alpha particles and detected that some alpha
particles passed through the gold foil while others deflected.i
Answer:
The answer is C
Explanation:
Thomson conducted many tests with cathode rays. Which led to his discovery of the electron.
Can somebody plz answer both these questions in this question thanks! only 2 sentences is fine :)
WILL MARK BRAINLIEST WHEOEVER ANSWERS FIRST :DDDD
Answer:
Electricity is made at a generating station by huge generators. The current is sent through transformers to increase the voltage to push the power long distances. The electrical charge goes through high-voltage transmission lines that stretch across the country.
Who was Alexander Fleming
Sir Alexander Fleming (6 August 1881 – 11 March 1955) was a Scottish physician and microbiologist, best known for discovering the enzyme lysozyme and the world's first broadly effective antibiotic substance which he named penicillin.
For this discovery he shared the Nobel Prize in Physiology or Medicine in 1945 with Howard Florey and Ernst Boris Chain.
he was a british doctor, born in august 6, 1881. he was also known as pharmacologist.
you can always search your question in goo, and you'll get a very short answer :)
What is the difference between absorption and scattering
Answer:
scattering is the direction of transmission absorption is the particle absorbs the energy of the photon
Explanation:
Identify the source of energy in a chemical reaction.
Of the two bromoderivatives, C6H5CH(CH3)Br and C6H5CH(C6H5)Br which one is more reactive in SN1 substitution reaction and why?
Answer:
tertiary
Explanation:
tertiary halogenoalkanes are more reactive than primary and secondary as the carbocation is more stable due to alkyl groups( have high electron density) donating electrons to stabilise the carbocation
what is the wavelength of a 250Hz wave traveling station speed of 350 m/s
Explanation:
ok....m.m....... nm...m
HEEEEeEELP PLEasE! IS SCIENCE
What is mole concept? how to do its numericals
A sample of water with a mass of 27.56g and an unknown temperature loses 2443 Joules. If the final temperature is found to be 62.50 C. What was the initial temperature?
Answer:
41.3 °C
Explanation:
From the question given above, the following data were obtained:
Mass (M) of water = 27.56 g
Heat (Q) loss = 2443 J
Final temperature (T2) = 62.5 °C
Initial temperature (T1) =?
NOTE: The specific heat capacity (C) of water is 4.18 J/g°C
Thus, we can obtain the initial temperature of the water by using the following formula:
Q = MC(T2 – T1)
2443 = 27.56 × 4.18 (62.5 – T1)
2443 = 115.2008 (62.5 – T1)
Divide both side by 115.2008
2443 / 115.2008 = (62.5 – T1)
21.20645 = 62.5 – T1
Collect like terms
21.20645 – 62.5 = – T1
– 41.3 = – T1
Divide both side by – 1
– 41.3 /– 1= – T1 / –1
41.3 = T1
T1 = 41.3 °C
Thus, the initial temperature of the water was 41.3 °C
Hello! Please help.
Is air an element, compound, or mixture?
Is Hydrochloride Acid an element, compound, or mixture?
Oh if you can could you put the explanation of one of them, thank you!
Answer:
Air is a mixture. Its constituents can be separated. For example: oxygen, nitrogen etc.
Hydrochloric acid is a mixture, being an acidic liquid.
living things
O cell wall
O chloroplasts
O Organelle
O organisms
