Answer:
Answer: The correct option is that the compounds are created by chemical reactions.
Explanation:
Option 1: Elements combine chemically in a specific ratio to form compounds. They can't be separated by physical methods like filtration. For example, is made up 2 H-atoms and 1 O-atom. When we filter water through normal filtration, we do not obtain H-atom and O-atom separately, but we get combined form of hydrogen and oxygen atom that is .
Option 2: Compounds are formed when two or more elements combine chemically.
Option 3: Compounds can have more than two types of elements. For example, In , 3 elements are present - Calcium(Ca), Carbon(C), Oxygen(O).
Option 4: Compounds formed have different properties from one another. There can be difference in physical properties as well as chemical properties. For example, (water) and (calcium carbonate) are two compounds. Water is present in liquid state and calcium carbonate is present in solid state. Hence, it showed that all the compounds cannot have same properties
The chemical compound can be created by chemical reactions. Therefore, option (A) is correct.
What is a Chemical compound?A chemical compound can be defined as a combination of two or more either similar or dissimilar chemical elements. A chemical compound is composed of many identical molecules containing atoms from more than one element held together by chemical bonds.
A molecule containing atoms of one element is therefore not a compound. A compound can be converted into a different substance by a chemical reaction, which can involve interactions with other substances. The chemical bonds between atoms may be broken or form new bonds.
Molecular compounds have covalent bonds, ionic compounds have ionic bonds, Metallic compounds have metallic bonds and coordination complexes have coordinated covalent bonds.
Therefore, compounds can be created by chemical reactions. They have different properties regardless of their elemental composition.
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Please help me I will give you the brain thing and extra points. image below part
Answer:
The answer is D, when H2S gas is bubbled into a lead acetate soulution, a precipitate forms
Explanation:
This is because a physical change is when it changes but doesn't turn into a new substance. A chemical change is when it transforms into a completly new substance. Hope this helps!!! :)
PLSSS HELP ME WITH THIS!!!!! Which one of these dishes would make the food dish the warmest when placed on top of it? As part of your answer, explain how the energy and temperature of both the top dish and the food dish will change when the food dish warms up, and why.
Answer:
Since the food dish 10 and it's at ur low energy soruce I would go with 20
Explanation: add 10 more of enegry it will bring it to 30 which that would make that warm enough and it's in between 10-50 and we dont want to much enegry into the dish
what are some objects that get colder when thermal energy is added? (besides an icepack)
Answer:
icepack
Explanation:
You are planning on making punch and you would like to cool it with ice. At the
store, there are 2 different one-pound bags of ice to choose from:
one that contains large ice cubes
one that contains small ice chips.
You only want to purchase one bag of ice and will add the entire bag to the punch.
Would one of the bags cool the punch at a faster rate? If so, which one and
why? If not, why?
Would one of the bags of ice cool the punch to a lower temperature? If so,
which one and why? If not, why?
The diagram below shows part of the rock cycle. (4 points)
Rock cycle with a volcanic eruption at the top. Moving counterclockwise, there is an arrow pointing to Rock B. From Rock B there is an arrow labeled sediment and compaction pointing to Rock C. From Rock C there is an arrow labeled heat and pressure pointing to Rock A. From Rock A there is an arrow labeled magma pointing back to volcanic eruption.
Which type of rock does B represent?
Answer Choices
1)Igneous rock
2)Metamorphic rock
3)Rock formed by compaction
4)Rock formed by heat and pressure
Answer:
1
Explanation:
Answer:
1. heat and pressure
sedimentary to metamorphic is heat and pressure
2. compaction and cementation
sediment to sedimentary rock is compaction and cementation
3. weathering and erosion
igneous rock to sediment is weathering and erosion
How do weathering and erosion differ?
a Weathering breaks down rocks; erosion moves them.
b Weathering has to do with air; erosion has to do with rocks.
c Weathering occurs only in winter; erosion occurs year-round.
d Weathering can be chemical or physical; erosion is only chemical.
Answer:
cl0wngvtz is correct.
Explanation:
Their answer is correct. :)
I'm in need of help! Thanks.
A painter needs to buy a new pulley system. Both systems have an input work of 100 J, but the old system model has an output work of 60 J and the new system model has an output work of 75 J.
Which system is more efficient?
Israel observed a bolt of lightning during a storm. Which form of energy does a bolt of lightning produce?
A. light C. nuclear
B. mechanical D. potential
Answer:
A. Light
Explanation:
LIGHTning
U answered your own question
Which of the following is an example of physical weathering?
a frost wedging
b Acid rain
c Oxidation
d Carbonic acid
help me out hear i need help
Answer:
Explanation:
i cant see the attachment
Zamir and Talia raced through a maze. Zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m east and 4 m north. Talia walked 2 m north, 6 m east, 3 m south, 4 m east, and 4 m north. Compare their displacements: Zamir’s displacement is Talia’s displacement.
add then compare the two
Answer:
equal to
Explanation:
Guillermo was finding it difficult to walk up the steps to his family’s apartment. His doctor thinks that his cells might not be getting enough oxygen or glucose Which body systems should the doctor test in order to find out whether Guillermo’s cells are getting enough oxygen and glucose and why? (Sentence starter: The body systems Guillermo should have tested are...
Answer: circulatory and respiratory systems.
Explanation:
Which wave has a wavelength that is most likely seen as red light?
Answer:
D
Explanation:
Red wavelenghs are usually around 620-750 nm
Answer:
D
Explanation:
ape x
Based on the results of your investigation,make a claim about how changing the size or shape of an object affects its density?
Answer:
It can affect it by taking away mass and volume. Mass and Volume are the two factors that calculate and make up density
Explanation:
Mass/Volume =Density
If you were to change the mass or volume by changing the size or shape of an object, then this would affect the density.
Dr. Grey performed an experiment to test how temperature affects activity levels in mice. She put one group of mice in a cold environment and another group of mice in a hot environment. Everything else about the two environments was the same, including the type and amount of food and water. She allowed the experiment to last for a few generations of mice and tested the activity levels of the different groups. There was no change in the activity levels of the mice, but she noticed that the mice in the cold environment had much darker, thicker fur than the mice in the hot environment. What scientific question could she ask based on her results? A. Does temperature have an effect on fur color and thickness in mice? B. Do the mice in the cold environment run faster than the mice in the hot environment? C. Which group of mice is the most attractive? D. Does food type have an effect on fur color and thickness in mice?
What is a doldrum?
a. a calm area of sinking air
b. when wind blows East to West
c. a calm area of rising air
D. When wind blows West to East
Answer:
A
Explanation:
What do the periods in the periodic table tell us?
Answer:
When you look at the periodic table, each row is called a period (Get it? ... All of the elements in a period have the same number of atomic orbitals. For example, every element in the top row (the first period) has one orbital for its electrons.
Explanation:
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Which material absorbs the MOST solar radiation? a.Sand b.Grassy Field C.Fresh snow d.Forest
Forest absorbs most of the solar radiation. Therefore, option (d) is correct.
What are solar radiations?Solar radiation can be described as electromagnetic waves coming from the sun and comes in three major types: visible light, infrared light, and ultraviolet light.
The electromagnetic spectrum has seven different types of light, listed from lowest frequency to highest: radio waves, microwaves, IR light, visible light, UV light, X-rays, and gamma rays. Solar radiation is light from the sun that can be categorized by its frequency and wavelength.
Solar irradiance can be described as the power per unit area received from the Sun in the form of radiation in the wavelength range and is measured in watts per square meter.
This may be measured in space or at the surface of the earth after atmospheric absorption and scattering. The forests have plants and trees which absorb the most solar radiation.
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What would happen if the sand dunes in an area were destroyed?
Answer:
Then everything around the sand dunes are destroyed. It's like a domino effect.
Explanation:
Sand dunes are very helpful in coastal management. Destruction or destabilization of sand dunes will make us it hard to survive from storms and destruction of some vegetation also.
What is sand dunes?Shorelines and desert landscapes frequently have sand dunes. Highly specialized plants and animals, especially rare and endangered species, find habitat on dunes.
Sand dunes offer essential ecological habitat as well as natural coastal defense against storm surge and strong waves, preventing or minimizing coastal flooding and structural damage. They serve as sand storage sites as well, delivering sand to beaches that have degraded.
Human activity, both purposeful and unintentional, endangers dunes Significant dune protection projects are run by nations like the United States, Australia, Canada, New Zealand, the United Kingdom, and the Netherlands.
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Is neon neutral and stable or unstable?
Answer:
neon is stable
Explanation:
beacuse it has a full octet or valence shell of 8 electrons
brainliest please:) i hope you have a nice day
Please answer each question carefully. If wrong, you have proven yourself stupid to the world.
How does cooking a turkey relate to the water cycle?
How does cooking a turkey relate to the nitrogen cycle?
How does cooking a turkey relate to the oxygen cycle?
How does cooking a turkey relate to the carbon cycle?
How does cooking a turkey relate to the Conservation of Mass and Energy?
Answer:
aw baby nah that ain't gonna work
points xx
Explanation:
Concentration is the amount of a substance in a given volume.
True or False
Answer:
True?
Explanation:
Answer:
i think its true but im not to sure
Explanation:
The concentration of a substance is the quantity of solute present in a given quantity of solution. Concentrations are usually expressed in terms of molarity, defined as the number of moles of solute in 1 L of solution.
TRUE OR FALSE 3 QUESTION If the statement is true, write true. If the statement is false, change the capitle word to make the statement true.
1) Cell growth and production of new organelles and enzymes are
characteristics of PROPHASE.
2) It would take FIVE cell divisions for one original cell to produce 128 new cells.
3) he two rod-like parts that make up a chromosome are called
CHROMATIDS.
1) This statement is False.
2) This statement is False.
3) This statement is True.
Cell growth and production of new organelles and enzymes are characteristics of Interphase, which is the resting phase between 2 successive cell divisions. Prophase is the first stage of mitotic division.
One original cell will take seven cell divisions to produce 128 new cells. Cell division is the process by which one original cell divides into two daughter cells.
The rod-like parts that makeup chromosomes are called chromatids. Each chromatid contains a double helix of DNA.
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An abiotic factor that MOST influences the organisms living in a saltmarsh isA fish.B water.C predators.D grasses
Answer:
The answer would be, B. water
Explanation:
If I remember correctly, an abiotic factor is a nonliving condition or thing, as climate or habitat, that influences or affects an ecosystem and the organisms in it. This would make water, the most accurate choice.
Answer:
B. Water
Explanation:
1.) Over the hour before the precipitation started falling where it did?
2) Over the hour after the precipitation stopped falling where it did
3) What do you think happened in this system that would help explain what caused this kind of precipitation event?
Answer:
Those are the answers to an unknown question???
Explanation:
Answer:
unknown question :/
Explanation:
Which of these events moves small pieces of rocks away from where they originally formed?
a Deposition
b Weathering
c Erosion
d Oxidation
Answer:
b
Explanation:
Answer:
Option C
Explanation:
Lets use the process of elimination to find the answer to this question. It's not option B because weathering is the breaking down of rocks through things that the Earth atmosphere comes into contact with like rain or living organisms, it's not option A because deposition is using bodies of water like rivers to lay down and compact rocks together using the strength of the stream. It's not option D because oxidation is a type of chemical reaction that has nothing to do with moving rock particles, leaving option C therefore it is your answer.
Hope this helps.
There are many ways that you can tell whether a chemical change has occurred. Which of the following is NOT a sign of chemical change?
-presence of bubbles
-liquid boiling
-change in color
-a release of an odor
Answer:
liquid bolling
Explanation:
because it just using heat.
Help Please! Thanks!
Answer:
a
Explanation:
it would be the most reasonable
what are at least 6 compounds of potassium ?
Answer:
nitrate, carbonate, chloride, bromide, cyanide, and sulfate.
Explanation:
Answer:
Chloride CL, Potassium hydroxide KOH, Potassium chloride KCI, Potassium nitrate KNO3, Potassium carbonate K2CO3, Sulfate SO²⁻ ₄
Explanation: