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.
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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Around 1997 there was an abrupt ______ degree F jump in temperature of coastal water
Answer:
different climates
Explanation:
Argument 1
The water in the puddle that Claire observed evaporated. The highest temperature was 32°C (90°F). Since the puddle was there in the morning and gone later in the day, it must have evaporated.
Argument 2
The water in the puddle that Claire observed evaporated. Since the highest temperature was 32°C (90°F), we know that it was a warm day. When water gets hot, it can change from liquid to gas. This is called evaporation. I think the water became so warm that it became water vapor (gas), and that’s why the puddle was gone by the afternoon.
1. Which argument is more convincing?
2. Why is the argument you selected more convincing?
Choose all the answers that apply.
Nitrogen has an atomic number of 7. Its atomic mass is 14. Nitrogen has _____.
seven electrons
seven neutrons
seven electron shells
23 neutrons
14 electrons
Please help (:
How does fossil evidence support Wegener’s hypothesis of continental drift? *
A. Similar fossils found on far apart landmasses suggest that the continents were once a single landmass.
B. Fossil evidence suggests that the continents have always been in their current positions.
C. No similarities exist between fossils on different continents.
Plant and animal fossils show evidence of changes in Earth’s magnetism.
D. Plant and animal fossils show evidence of changes in Earth’s magnetism.
Answer:
A
Explanation:
please help me before june 13th
Place the following items in the correct order to show how a voice could be recorded and saved using a digital device.
Answer:
1. person sings
2. sound converted into signals
3. sounds converted into ones and zeros
4. the digital pattern
5. the analog
Explanation:
PLSSSSSSSS HELP MEEEEEEEEEEEEEE
Answer: The answer to your question is B,C,D.
Answer: i think A, B, D?
Explanation:
Where does most fresh water exist?
Answer:
aquifers, ice caps, and glaciers I think
the atomic number of rubidium is 37. if the mass number of rubidium is 85 how many subatomic particles are found inside and outside of the nucleus of the rubidium atom?
Number of particles inside Nucleus Number of particles outside Nucleus
Answer:
85 inside,37 outside
Explanation:
85 inside =37 protons and 48 neutrons
37 outside=37 electrons
Hope this helps
NEED HELP WITH #1 WILL GIVE BRAINLIEST FOR CORRECT ANSWERS PLEEEASE HELPPP
Answer:
1) 64 grams of salt
2) Ce2(SO4)3
Explanation:
Answer:??
Explanation:
Percy finds a rock in his backyard. It looks like several pebbles cemented together. Percy has found _____.
Answer:
Percy has found conglomerate.
Explanation:
Conglomerate is a sedimentary rock,formed from round fragments embedded in a cementing material such as silica
Answer:
Sedimentary rock
Explanation:
GIVING BRAINLIEST FIVE STARS AND HEART!
Nuclear fusion and nuclear fission both release huge amounts of energy. How are the two processes different?
Find the slope of the line that passes through the points (2, 11) and (8, 14).
Answer: The slope is M=1/2 you subtract 14-11 and subtract 8-2 which gives you 3/6 and the last answer becomes 1/2
Explanation:
H2O is an example of what formula?
Do you think rayon when burnt will stick to the body like other synthetic fibers?
Explain the relationship between work, energy and power
Answer:
Force exerted on an object over a distance does work. Work can increase energy, and energy can do work. Power is the rate at which work is done.
Explanation:
Heredity
Genes
Alleles
Genotype
Phenotype
Dominant
Recessive
Incomplete Dominance
Codominance
Please define these words
Genes - A distance sequence of nucleotides.
Explain what is happening with the heat transfer in the diagram below.
Answer:they attain thermal equilibrium
Explanation:thermal equilibrium is state which there no change in level temperature.
what are examples of attractive and repulsive forces?
How do the properties of each of these materials vary? Paper and Cardboard, Plastic, Wood, Metals
PLEASE HELP NOW
The properties of all of these material vary from each other. Paper, cardboard and plastic are insulators and metals and conductors. Each of them has different physical properties.
What are physical properties ?The physical properties of a substance include properties which changes its physical structure, size, shape, phase etc. Solubility, conductivity, resistance etc. are also physical properties.
Here, paper, cupboard and plastic are insulators and they does not conduct electricity. Whereas, metals are very good conductors and they have wide range of applications in optoelectronic devices.
Each of these materials has different melting temperature and different uses. Their density also vary significantly. The paper is the less dense one here and metals are denser.
The applications of these materials are based on their physical properties.
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A scientist evaluates its livestock and determines which livestock it is
going to allow to mate. What is this process called and how will this impact
the genetic traits of the livestock?
Any animals look for steangth mostly because the offspring can probobly onther trait is looks. The male will try to impess the female.
What is most likely the amount of energy available at a trophic level of tertiary consumers if the amount of energy available to secondary consumers in that food web is 200 kilocalories?
A. 0 kilocalories
B. 20 kilocalories
C. 200 kilocalories
D. 2,000 kilocalories
Answer:
D.) 2,000 kilocalories would be the correct answer.
Explanation:
help pls, ty.
The law of conservation of matter states that matter can be neither created nor destroyed. Your friend shows you the following chemical equation: CaCO3,CaO+CO2, He says that because the oxygen atoms are split between two different molecules in the products, the equation does not support the law of conservation of matter. Is your friend right? Explain your answer.
Answer:
no
Explanation:
no your friend is not right, everything is supported by the law of conservation of matter, just because the oxygen atoms are split doesn't mean it isn't supported by this
Static electricity is the buildup of electric charges. Which of the following is an example of the natural discharge of static electricity?
A.
ocean waves
B.earth's magnetic poles
C. northern lights
D. lightning
these days cloths made out of a mixture of synthetic fiber and natural fibers are more popular than those made purly out of synthetic fiber. Discuss the reason for this
Answer: Clothes purely made of synthetic fibers are not comfortable in a hot and humid environment as they don't have the property to absorb water or sweat quickly so their water-resistant property makes them unsuitable for hot humid environment .
Explanation:
Mixing of synthetic fiber and natural fibers enhances the properties such as strength, elasticity, and ease of ironing and washing. Generally in hot environments it is preferred to wear a mixture of synthetic and natural fiber than wearing only clothes made from synthetic fiber .
Moreover, mixing synthetic fibres with natural fibres enhances their properties, such as strength, elasticity and ease of washing and ironing. Hence, these days clothes made out of a mixture of synthetic fibres and natural fibres are more popular than those made purely out of synthetic fibres.
What would happen if the sand dunes in an area were destroyed?
Scientists believe that the modern horse developed from a short, horse-like mammal about the size of a dog. Over millions of years, the horse increased in size and developed much longer legs. Horses with longer legs had a better chance of surviving than the shorter-legged members of the herd. How did longer legs help horses survive?
A. They allowed the horses to reach nuts in trees.
B. They allowed the horses to outrun predators.
C. They allowed the horses to carry more body weight.
D. They allowed the horses to capture prey.
Answer:
B
Explanation:
Horses with longer legs could out run predators and survive. Not getting eaten or injured helps with staying alive long enough to reproduce.
Use the picture below to answer the question.
Comparing the two waves, wave B has a...
A) higher frequency.
B) greater amplitude.
C) shorter wavelength.
D) longer wavelength.
Answer: D) longer wavelength.
Explanation:
Sperm whales are found in oceans around the world and are known to have the largest brain of any organism. The head of a sperm whale takes up about one–third of its body. Another anatomical characteristic of a sperm whale are the hind leg bones circled below.
In terms of evolution, which of the following statements best explains why the sperm whale has hind limb bones?
A: Ancestors of the sperm whale had hind legs to walk on land but the legs became useless when they moved to water.
B: Sperm whales began developing hind limbs to escape hunters and then hunting decreased as the population dwindled.
C: Sperm whales have legs when they are young and then they disappear since they are not needed in water.
D: Sperm whales are equipped with leg bones in case they need to move to land some day.
HELPPP ME ASPAP I'LL GIVE YOU BRAINLIST (NO NONSENSE PLS)
1. Nobelium has an atomic number of 102 and an atomic mass of 259. Explain how to calculate how many neutrons are in the most common form of Nobelium. Include a mathematical expression to help explain your answer (example: 1+1 = 2)
2. The atomic mass of Mercury is 200.592. The atomic number for Mercury is 80. As protons and neutrons are only available as a whole, how do scientists determine an atomic mass reported as a decimal number? Explain your answer using Mercury as an example.
Answer:
1) 157 Neutrons, 2) the decimal is simply is due to isotopes, because the elements atomic mass is an average of these isotopes multiplied by its abundance(or percentage on earth.) For Mercury, it has many isotopes(an element with a different mass number, logically the atomic mass listed on the periodic table as a mass has 100% abundance, therefore this is used to find the most abundant mass for that particular element/molar mass) likewise, Mercury has an atomic mass of 200.59 u, as one mol of Hg(mercury) is 200.59 grams.
Explanation:
The formula for Neutrons in an atom of an element is calculated by finding the