Fill in the chart to identify how scientists represent matter and chemical changes in matter.
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A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side
A chemical symbol is a notation of one or two letters representing a chemical element
A chemical formula identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element.
Related Questions
How is salinity affected?
(a) evaporation increases
(c) freezing increases
(d) melting increases
(e) precipitation increases
Where does the energy that causes evaporation come from?
What role does gravity play in the water cycle?
Describe the flow of one molecule of water through the water cycle, beginning in the ocean.
Answers
Answer:
A and E.
Explanation:
When water evaporates, it leaves the salt. When rain falls, the salt is diluted. The sun causes the evaporation. The also the sunlight is the energy source, the greatest force propelling the water cycle is gravity. Gravity is the force of attraction between two objects, and Earth’s gravity pulls matter downward, toward its center. It pulls precipitation down from clouds and pulls water downhill. Gravity also moves air and ocean water. Also Water travels in a continuous path through Earth called the water cycle. The journey starts in the Earth's oceans. As the Sun heats the ocean, the water evaporates into a gas. The gas meets cooler air, and the gas changes into droplets of tiny water molecules. This process is called condensation. Little droplets of water fall back down to Earth again as precipitation. The precipitation fills up the rivers and various other things and the cycle begins all over again. Now with this being said, there is much more than just this!
Good luck!
2. Calculate: For each object, substitute the values you know into the gravitational potential energy equation to solve for weight. Record each object's weight in the fourth (science)
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Answer:
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Explanation:
What patterns in the rock layer fossils helped you identify an extinction?
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How does melanin provide protection against skin cancer? use absorb
energy
light in your sentece
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The melanin provides protection against skin cancer by absorbing harmful UV light from the electromagnetic spectrum.
What is electromagnetic spectrum?
The electromagnetic spectrum consists of radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.
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i need help pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
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A cube has a mass of 25g and a volume of 5cm3, what is its density?
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Density = 25 / 5
Density = 5 g/cm3
Which graph above shows an object’s acceleration? Why did you choose that graph(explain why)
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Velocity vs. Time shows an objects acceleration because... in Position vs. Time the line does not go through the origin and it’s very uneven, But Velocitu vs. time goes through the origin and has straight lines.
Answer:
B.
Explanation:
Because the lines are vertical no so wormy like.
Why is it necessary to see a similar pattern of change in fossils from several places in order to conclude that an extinction happened?
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One can learn a lot about the history of life on Earth thanks to fossils. They can help us understand the origins of life and humanity, the evolution of the planet and its environment across time, and the once-connected nature of the continents that are now widely separated.
What are fossils ?Any surviving remnants, impression, or evidence of a once-living creature from a previous geological epoch is referred to as a fossil. Examples include fossilized bones, shells, exoskeletons, animal or microbe impressions in stone, amber-preserved artifacts, hair, petrified wood, oil, coal, and DNA traces.
Scientists use the fossil record to seek for patterns that may be used to infer which creatures are related to one another, how groups of organisms evolved through time, and how the Earth's climate affected the kinds of plants and animals that could survive for a very long time.
Thus, a lot about the history of life on Earth thanks to fossils. They can help us understand the origins of life and humanity.
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Match the following vocabulary words with the correct definitions.
1. amount of matter in an object
matter
2. anything which has mass and occupies space
molecule
3. measurement of the pull of gravity on an object
atom
4. molecule with different atoms chemically united
mass
5. chemical combination of two or more atoms
weight
6. smallest unit of matter
compound
Answers
2. Matter
3. Weight
4. Compound
5. Molecules
6. Atom
Fill in the chart to describe and give examples of physical changes.
Answers
Answer:
here are some examples of physical change!!!
Explanation:
-An ice cube melting into water in your drink.
-Freezing water to make ice cubes.
-Boiling water evaporating.
-Hot shower water turning to steam.
-Steam from the shower condensing on a mirror.
Answer:
Examples:
Melting an ice cube.
Boiling water.
Mixing sand and water.
Breaking a glass.
Dissolving sugar and water
Choose all the answers that apply.
Carbon-13 has an atomic number of 6. Carbon-13 _____.
has two electron shells
has 7 electrons
is an isotope
is in period 2
has 7 neutrons
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Answer:
has 7 neutrons
hope this helped.
CH4 + __O2 → CO2 + ___H2O
balance this equation
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Explanation:
need points bye have good day
Answer:
CH4+2O2→CO2+2H2O
Explanation:
Start with the least common atoms and leave things like H and O to the end.
You need to have the same number of methane reactants as carbon dioxide products because there is one carbon in each. I’ll set them both to 1 for now. O see two things with oxygen on the product side so we will have to juggle numbers a bit to figure out those. There is only H in the water so we’ll go there next. One CH4 gives 2 water molecules so we have that done now. At last we can tackle the O atoms. In two waters there are 2 and in the CO2 there are two more so a total of 4 O atoms in the products so we need two O2 molecules in the reactant side.
Hope this is useful.
Earth’s surface is constantly changed by erosion and deposition. Erosion breaks down Earth’s surface by carrying materials away from an area. Deposition builds up Earth’s surface when these materials are deposited in an area over time.
Which landform results when erosion occurs during volcanic eruptions, but deposition does not directly contribute to creating the landform?
volcanic soil
cinder cone
caldera
lava plateau
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Answer:
Caldera
Explanation:
C
The landform results when erosion occurs during volcanic eruptions, but deposition does not directly contribute to creating the landform is caldera.
Where does the operation take place?Involving the wear, transport and deposition of soils and rock particles. Erosion is the process of wear, transport and sedimentation of soil, subsoils and rocks as an effect of the action of erosive agents, such as water, wind and living beings.
In this case the caldera is landform results when erosion occurs during volcanic eruptions, but deposition does not directly contribute to creating the landform.
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What type of eclipse is pictured below?
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The wastewater in your home goes to one of three places. It can run into a home septic system, it can go to a centralized sewage treatment plant, or it might be directly discharged into a body of water. Where does your water go after it goes down the drain?
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Answer:
Sewage Treatment
Explanation:
I am sorry if I got this wrong but if I did please correct me!
How do organisms form carbon films?
Organisms turn into rock.
Residue is left on rocks when organisms decay.
Hollow forms are left in sediment by decaying organisms.
Organisms leave evidence of their activities, such as footprints.
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Answer:
hollows forms are left in sediment by decaying organisms
Answer:
The answer is C. I just did the quiz and got 90%, but this is not the one I got wrong. Hope this helps!
Explanation:
Answer ian rlly kno ...........
Answers
0-2
2+2 (cause one was negative add instead of subtract)
You would get -2/4 simply that to
-1/2
What patterns in the rock layer fossils helped you identify an extinction?
Answers
Answer:
Hope this helps!! :D
Explanation:
Often, the rock layers bookending the mass extinction are noticeably different in their compositions. These changes in the rocks show the effects of environmental disturbances that triggered the mass extinction and sometimes hint at the catastrophic cause of the extinction.
pls help really easy just search the questions f u need to
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Answer:i cant seee
Explanation:
none
HELP plz
Are beaches made from erosion or deposition?
Answers
Answer:
Desposition
Explanation:
Answer:
Deposition
Explanation:
Beaches are wave-deposited accumulations of sediment.
What is unique about obtaining water from an artesian well?
The water is heated by magma or hot rocks.
The water is found in an impermeable layer.
The water is under pressure naturally and no pump is needed.
A mechanical pump must be installed to bring water to the surface.
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Answer:
The water is under pressure naturally and no pump is needed.
Explanation:
C
The water in artesian wells is under natural pressure and requires no pump.
What are artesian wells?They are wells that contain water that is under natural flowing pressure. Thus, there is no need of using artificial pumps in order to get the water to the surface.
Artesian wells are dug on lands with special geological features that enable the water to flow out under natural pressure.
Artesian wells differ from other types of wells that require mechanical or electric pumps before the water can get to the surface.
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I KEEP ASKING FOR HELP IVE DONE MOST OF THE QUESTIONS MYSELF BUT NEED HELP IN SOME IF YOU ANSWER I WILL GIVE BRAINLIEST
What happens to the motion of an object if forces acting on the object are equal and balanced?
A. The object begins to move
B. The object begins to slow down
C. The motion of the object does not change
Answers
Answer:
When the forces acting on an object have equal strength and act in opposite directions, they are balanced. These forces cancel out one another, and the motion of the object they are acting on remains unchanged. The object may change its speed (speed up or slow down), or it may change its direction.
So I think its C
You see this is because if the forces were different the object would either speed up or slow down but in this case the forces are equal so the motion of the object does not change.
Hope This Helps :)
a
a decrease in the number of zebra mussels along the waterways
b
an increase in the number of zebra mussels along the waterways
c
no effect because more time is needed to determine an outcome
d
no change in the number of zebra mussels infecting the waterways
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Could you add a screenshot so we know what's being asked please?
How would the amount of force needed to keep the kite in the air change if it were made out of a heavier material instead of a lighter material?
(A)The amount of force needed would be greater.
(B)The amount of force needed would be the same.
(C)The amount of force needed would go up and down with the kite.
(D)The amount of force needed would be smaller.
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what am i supposed to write here?
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Answer:
I think u are supposted to find out the are the missing things
Explanation:
Help its for science ill give brainilest.
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Answer:
This equation reveals that the kinetic energy of an object is directly proportional to the square of its speed. That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four.
Explanation:
A characteristic property is one that remains the same regardless of the amount of matter that is present.
Which of the following is a characteristic property of matter?
Group of answer choices
Density
Mass
Volume
Weight
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The wastewater in your home goes to one of three places. It can run into a home septic system, it can go to a centralized sewage treatment plant, or it might be directly discharged into a body of water. Where does your water go after it goes down the drain?
Answers
What would u write in a THESIS for Piney Woods?
GIVING BRAINLIST WHO EVER ANSWERS WITH PARAGRAPHS!
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Answer:
Your thesis statement belongs at the end of your first paragraph, also known as your introduction. Use it to generate interest in your topic and encourage your audience to continue reading.
Explanation:
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Answer:
There is not a wrong answer for creating a thesis. The thesis reflects the many opinions you have towards the particular script. Use what you have learned from reading this and create a morale. If you have an opinion about it, try clearly stating it. Anything works. Just think of it as a bridge. Can it support the many ideas you have? REMEMBER stay on track and dont over think it!
Explanation:
Why might different types of fossils be found in rock layers that come before and after a rock layer that contains no fossils?
Answers
Answer:
because they can move around under the earth
Explanation:
