How Do Glow Sticks Glow? Explain in 5-6 sentences. IF NOT, YOUR ANSWER WILL BE DELETED
Answers
Answer:
All liquid glow products depend on a chemical process known as CHEMILUMINESCENCE to produce their light. Chemiluminesence is a chemical reaction that causes a release of energy in the form of light. To produce this light the electrons in the chemicals become excited and rise to a higher energy level.To utilise this process glowsticks contain two liquids; hydrogen peroxide and tert-butyl alcohol. When mixed together it is these liquids that create the glow. Fluorescent dyes are also used in the alcohol to alter the colour of the light emitted. Chemiluminesence is a chemical reaction that causes a release of energy in the form of light.
Explanation:
Hope It Helps!
Related Questions
Genes are sections of DNA that code for a particular trait. Genes are
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Answer: Genes are transcribed into RNA molecules, which are then translated into proteins.
Explanation: Genes are sections of DNA that contribute to certain traits, characteristics or functions. Genes code for proteins or parts of proteins that influence things like the immune system, skin pigmentation, hormone production, and eye color.
Answer:
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes.
Explanation:
pls i need answers to the 1st, 2nd, and 3rd question
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I believe number one has 2 valance electrons
number 2 has 1 valance electron
and number 3 has 8 valance electrons
valance electrons are the electrons on the outermost ring
Explain how thinking about chemicals at the atomic and molecular scale can help to explain observable phenomena, such as the changes you see when you etch copper.
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Not a straight up answer, but moreover to help you get it: (Circuit Boards)
Aside from the tasks it performs, perhaps the most important function of a circuit board is providing a way to integrate the electronics for a device in a compact space. A PCB allows components to be correctly connected to a power source while being safely insulated. Also, circuit boards are less expensive than other options because they can be designed with digital design tools and manufactured in high volume using factory automation.
Partially straight up, helping you get the answer: (Copper Chloride)
Copper(II) chloride is the chemical compound with the chemical formula CuCl 2. This is a light brown solid, which slowly absorbs moisture to form a blue-green dihydrate.
Etching helps us to see the structure of the atoms of copper.
What is etching?The term etching refers to the process by which we expose the inner structure of copper. It is usually done electrically or by the use of an acid. The surface of the copper is removed and the inner structure of the copper is shown.
As such, when you etch copper, you can see the inner structure such as the arrangement of the atoms of copper and how they fit together.
As such looking through the etched copper would help you to appreciate that matter is composed of atoms.
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very easy but hard to solve I need help lol
Answers
Answer:
1. B
2. D
3. A
4. C
Explanation:
Read the definitions and the words at the top .
Which statement is NOT true regarding natural vs. synthetic materials?
A) An example of a natural material is sand.
B) An example of a synthetic material is nylon.
C) Synthetic materials are made from natural resources.
D) Synthetic materials only have a negative impact on society.
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Answer:
Option C
Explanation:
Answer:
Option C
Explanation:
PLEASE HELP ME Research ten stars from the list below and create a completed chart like the example provided.
Write a conclusion based on the data you collected.
Assignment Directions
Choose ten stars from the list to research and classify using apparent magnitude, size (compared to our sun), distance from the Earth, star location (constellation), and color.
Sirius
Canopus
Vega
Alpha Centauri
Procyon
Beta Centauri
Achernar
Alpha Crucis
Capella
Altair.
Create a chart like the example below for the stars you chose. The star example will help you to better understand how to fill in the information.
To help you analyze your data and write a conclusion, answer the following questions in paragraph form.
Which of the 10 stars that you chose was the largest?
Which of the 10 stars that you chose was the brightest?
Which star(s) would you be able to see without the aid of a telescope? Give a reason for this.
Was there a connection between the size of a star and a star's magnitude? Give an example from your data to support your answer.
Name a different property other than the ones in the chart that can also be used to classify stars.
Submission Requirements
Upload the completed chart.
Write a conclusion paragraph based on the five questions.
Answers
Answer:
A glance at the night sky above Earth shows that some stars are much brighter than others. However, the brightness of a star depends on its composition and how far it is from the planet.
Astronomers define star brightness in terms of apparent magnitude — how bright the star appears from Earth — and absolute magnitude — how bright the star appears at a standard distance of 32.6 light-years, or 10 parsecs. (A light-year is the distance light travels in one year — about 6 trillion miles, or 10 trillion kilometers.) Astronomers also measure luminosity — the amount of energy (light) that a star emits from its surface.
Measuring star brightness is an ancient idea, but today astronomers use more precise tools to obtain the calculation. Specifically, they use the electromagnetic spectrum, focusing on the wavelengths visible to the human eyes. Every star has a distinctive spectrum of light, which to our eyes is rendered as a color.
Explanation:
What is the charge on the Cr in Cr2O72-
Answers
Answer:
+6.
Explanation:
So, a chromium atom here has an oxidation number of +6.
Which of the following shows the correct sequence of the Cell Cycle?
Prophase, Metaphase, Telophase, Cytokinesis, Interphase, Anaphase
Interphase, Cytokinesis, Prophase, Metaphase, Anaphase, Telophase
Cytokinesis, Interphase, Prophase, Telophase, Metaphase, Interphase
Interphase, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis
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Interphase, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis are the proper phases of the cell cycle. The series of actions that take place between the development of a mother cell and the production of two daughter cells is known as the cell cycle.
Interphase and cell division are the two main stages. The phase of the cell cycle known as interphase is when the cell develops and gets ready to divide. The initial stage of cell division, known as prophase, occurs when the nuclear envelope separates and the chromosomes condense.
The second stage of cell division, known as metaphase, is when the chromosomes align in the centre of the cell. The third stage of cell division, known as anaphase, is when the chromosomes split and migrate to the opposing poles of the cell.
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I REALLY NEED HELP!! how is substance combustion related to chemical energy
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Answer:
Any substance that can be used as a fuel contains chemical energy.
In combustion reaction chemical energy is converted to heat and light energy.
for example, when we burn coal (contain chemical energy) we gain light and heat
help asap please help no links
Answers
Answer:
Food or Sun
Explanation:
I'm not sure if it's food or sun, but try both
What is the producer in this food chain?
Answers
it is sunlight and you can see its the first one
Answer:
There are the: Decomposers( plants)
Which element is represented by this model?
Be; Beryllium
N; Nitrogen
C; Carbon
F: Fluorine
Answers
Answer: C; Carbon
Explanation: The model is showing it has 6 electrons, 6 protons, and 6 neutrons. Therefore the element, carbon.
Answer:
Carbon
Ok it needs more characters
HELP HELP HELP MEH PLEASE ILL MARK BRAINLIEST
Classify each characteristic as either: Metals, NonMetals
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Answer:
High luster- shiny: metals
Low luster- dull: non-metals
Is Ductile- can be pulled into thin wires: metals
Not ductile: non-metals
Not malleable- is brittle: non-metals
Is malleable- elements can be hammered into thin sheets: metals
Poor conductors of heat and electricity: non-metals
Good conductors of heat and electricity: metals
Located on the left side of the periodic table: metals
Located on the right side of the periodic table: non-metals
sorry if i got something wrong but i think this is all right
hope this helps :)
Answer:
High luster shiny is the characteristic of metals while low luster and dull is a non metal.
Metals are ductile because wires are made up of metals which is due to their ductility. non metals are not ductile.
Non metals are non melliable while metals are melliable
Non metals are poor conductor while metals are good conductor of heat and electricity.
Metals are located on the left side while non metals are located on right side of periodic table.
Explanation:
How does an atom change if all of its electrons are removed?
p.s. I'll mark the first answer the brainliest if it is correct! ;)
a. The atom’s volume increases.
b. The atom’s mass increases.
c. The atom becomes positively charged.
d. The atom becomes negatively charged.
Answers
c. The atom becomes positively charged
if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom
During autumn, what happens? (Select all that apply.)
Days become warmer and longer.
Animals prepare to survive the winter.
Some trees begin to shed their leaves.
Plants prepare to survive the winter.
Answers
During autumn, several changes occur in nature. Some of the changes that happen during this season include:Days become cooler and shorter,animals prepare to survive the winter.some trees begin to shed their leaves and plants prepare to survive winter, thus all options are correct.
1. Days become cooler and shorter: As autumn arrives, the weather gradually becomes cooler. The days also become shorter, meaning there is less sunlight each day. This decrease in daylight hours is due to the Earth's tilt on its axis as it orbits the sun.
2. Animals prepare to survive the winter: Many animals start making preparations for the upcoming winter during autumn. They may begin to store food or find sheltered places to hibernate. For example, squirrels gather and store nuts, birds migrate to warmer regions, and bears build up fat reserves for hibernation.
3. Some trees begin to shed their leaves: One of the most notable changes during autumn is the colorful transformation of tree leaves. Some trees, such as deciduous trees, shed their leaves during this season. As the days shorten and temperatures drop, the trees receive less sunlight, which triggers the production of a pigment called anthocyanin. This pigment gives leaves their vibrant red, orange, and yellow colors before they eventually fall off.
4. Plants prepare to survive the winter: Just like animals, plants also make preparations to survive the harsh conditions of winter. They may enter a state of dormancy or store energy and nutrients in their roots to survive until spring. Some plants produce seeds or fruits during autumn, ensuring their offspring can grow when conditions become favorable again.
In summary, during autumn, days become cooler and shorter, animals prepare for winter, some trees shed their leaves, and plants make preparations to survive until spring. These changes are part of the natural cycle of life and adaptation to seasonal variations.Thus, all options are correct.
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The number of atoms in the reactants has to be
Equal to
less than
greater than
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4. Which of the following is a solution? *
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Answer:
chemistry- A homogeneous mixture
a solution is also something to solve a problem
d
d
f
f
g
hh ⃤
⃤ ⃤ ⃤ ⃤ ⃤
Every few years, winds stop blowing for months at a time causing the ocean currents to slow down, and causing the nutrient-rich deep ocean cold water that usually wells up to slow down. As a result, fishermen off the coast of South America catch fewer fish during this phenomenon. What is this phenomenon called?
A. El Gulf Stream
B. La Ms. Shamsi
C. El Nina
D. El Nino
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Answer:
D. El Nino
Explanation:
a warming of the ocean surface or above average sea surface temperature’s in the central and eastern tropical Pacific Ocean. Basically when warmer than average water temp develop on the pacific.
Draw and use algebra tiles to solve the equation. 2x + 3 = 5 x =
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Answer:
1 is the correct answer:)
Subtract
3
33
from both sides of the equation
2+3=5
Simplify
Subtract
5
5x5x
from both sides of the equation
Simplify
Divide both sides of the equation by the same term
Simplify
than you will have 1.
?What statement best describes the arrangement of the atoms in an ethylene molecule?
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Which of these phrases would go in the overlap? Select two options.
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Which statement about the movement of the sun and stars is correct?(1 point)
Responses
They move from east to west across the sky each day.
They move from east to west across the sky each day.
They move from south to north across the sky each day.
They move from south to north across the sky each day.
They move from north to south across the sky each day.
They move from north to south across the sky each day.
They move from west to east across the sky each day.
They move from west to east across the sky each day. this is science btw
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Answer: East to West
Explanation:
Fill each box with the chemical formula of the compound.
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NaF, NaBr, Na2O, Na2S, Na3N, Na3P, NaI
KF, KBr, K2O, K2S, K3N, K3P, KI
BeF2, BeBr2, BeO, BeS, Be3N2, Be3P3, BeI2
MgF2, MgBr2, MgO, MgS, Mg3N2, Mg3P2, MgI2
CaF2, CaBr2, CaO, CaS, Ca3N2, Ca3P2, CaI2
Hope this helps! Make sure that the numbers are written small at the bottom of the letter cause it wasnt possible to do that here.
PLEASE ANSWER QUICKLY!!!!! Which of the following is NOT a function of your integumentary system?
A) Protecting against infection
B) Synthesizing vitamin D
C) Maintaining Fluid Balance
D) Stabilizing blood pressure
Answers
Answer: Must be a trick question.
Explanation: All of these are a function of the integumentary system.
Hope this helps <3
2 The precipitate formed when sodium hydroxide reacts with solutions
containing metal ions is the corresponding METAL HYDROXIDE.
a Write word equations and symbol equations including state symbols)
to show how the following solutions react with sodium hydroxide:
magnesium sulfate, MgSO4
ii iron(II) sulfate, FeSO4
ili iron(III) chloride, FeCl3
iv copper(ll) chloride, CuCl2
Answers
Answer:
Explanation:
MgSO4 + 2NaOH -------> Mg(OH)2 + 2NaSO4
CuCl2 +2NaOH -------> Cu (OH)2 + 2Nacl
FeCl3 + 3NaOH ----> Fe(OH)3 + 3NaCl
based on this can you try for the FeSO4. similar to first reaction showed above
What is an ellipse please help)
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In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.
Maybe they might use that math thing for Science.
What is the process of the Carbon Cycle
15 POINTS XD IM RICH ;-)
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how many atoms are in 5Na3PO4
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Which choice describes an organism found in the understory of a rainforest? Responses
A. Palms and other small trees
B. Very tall trees
C. Bacteria
D. Thick, woody vines
Answers
Answer: Palms and other small trees
Explanation:
Answer:
A. Palms and other small trees
Explanation:
Understory Layer
Located several meters below the canopy, the understory is an even darker, stiller, and more humid environment. Plants here, such as palms and philodendrons, are much shorter and have larger leaves than plants that dominate the canopy. Understory plants’ large leaves catch the minimal sunlight reaching beyond the dense canopy.
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Explain the main difference between relative and absolute dating and how geologists do both.
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Answer:
Absolute dating, you can determine its age in numbers, but Relative dating, you just determine which one is older or younger than the other
Explanation: Geologist determine absolute dating by using the radioactive isotopes, by knows its half life age, but Relative dating Geologist determine which one is younger by using the logical thinking, For example, the upper layer of rocks is the newer layer unless it is folded, according to superposition of sedimentary rocks. and so on.