The substance(s) or molecules at the beginning of a chemical reaction is called a
chemical equation
product
reactant
Answers
A chemical reaction is the process in which atoms present in the starting substances rearrange to give new chemical combinations present in the substances formed by the reaction. These starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products.
Related Questions
2. A change in velocity (speed and/or direction) is... *
A.speed
B.Velocity
C. Acceleration
Answers
What are the different layers of the Earth, and how do they interact?
Answers
How did the peak of Mt. Everest rise from sea level to 8,848 feet?
Answers
Answer:
The height of Everest. Controversy over the exact elevation of the summit developed because of variations in snow level, gravity deviation, and light refraction. The figure 29,028 feet (8,848 metres), plus or minus a fraction, was established by the Survey of India between 1952 and 1954 and became widely accepted.
Answer:
The height of Everest. Controversy over the exact elevation of the summit developed because of variations in snow level, gravity deviation, and light refraction.
Explanation:
What is the influence of temperature on a chemical change?
Answers
Answer:
Increasing the temperature will cause chemical changes to occur faster. Decreasing the temperature, causes the particles to lose energy which causes them to move around less and slower. The less they move, the less collisions occur, and the less reactions occur between the chemicals = slower reaction rate.
Explanation:
Please mark me brainliest
plz help .....................
Answers
Answer:
1. conduction
2. radiation
3.convection
4. conduction?
5. radiation
6. convection
7. convection
8. convection
9. radiation
10.radiation
(sorry if they aren't all correct)
The edges of South America and Africa seem to fit together like a puzzle.
A.true
B.false
Answers
Answer: true
Explanation:
Answer:
It's true...
Explanation:
Please help I will give brainlist
How would you write the formula for sugar-water solution if the formula for salt-water solution is written as NaCl(aq).
The formula for solid salt is NaCl(s).
The formula for solid sugar is C6H12O6(s).
Answers
Answer:
Explanation:
The chemical or molecular formula for sucrose is C12H22O11.
After Eris was discovered, scientists had to decide whether to count it as a planet. Why did this make them question whether Pluto should still be counted as a planet?
a
because Pluto and Eris are both space objects
b
because Pluto and Eris were discovered at the same time
c
because Pluto and Eris are very different
d
because Pluto and Eris are very similar
Answers
Answer:
After Eris was discovered, they had to decide whether Eris was a planet or not. If they decided it wasn't a planet, they had to also decide whether Pluto should be counted as a planet since Eris and Pluto were quite similar. They were the same size, and they were both part of the Kuiper Belt.
Explanation:
Planets are the celestial bodies that are not fixed. Pluto should be counted as a planet was a question as both Pluto and Eris were similar.
What are Pluto and Eris?Pluto is now considered a dwarf planet and is found in the Kuiper belt that is present beyond the planet, Neptune. Similarly, Eris is also a dwarf planet.
Eris is the second-largest dwarf planet and is very similar to Pluto. The discovery of Eris questioned whether Pluto should be considered a planet.
Both the planets Pluto and Eris were similar in size and were part of the Kuiper Belt leading to the question of whether they should be a planet or not.
Therefore, option d. Pluto and Eris are very similar.
Learn more about Eris here:
https://brainly.com/question/15105153
which one should I go in ??????
Answers
Answer:
the hatchery I think
Explanation:
because i think
Select all of the compounds.
Group of answer choices
water (H2O)
gold (Au)
nitric acid (HNO3)
cobalt (Co)
oxygen (O2)
Answers
H2O
HNO3
___________________ can be renewable or nonrenewable.
isn't it fossil fuels? i'm not sure
Answers
Answer:
wood, aluminum, gemstones, fabric, paper, rock and many others can be renewable or nonrenewable.
Hope i get brainliest
Explanation:
When balancing a chemical equation, which of the following are you allowed to do?
Take away substances
Add coefficients
Change subscripts
Add new substances
Answers
Answer:
Add Coefficients
Explanation:
You CAN'T change the identity of an element or substance in an equation. You can only change coefficients.
the fossils in line 4 __ are the ones in line 1
Answers
How is science based on observation used as evidence? How can evidence be used?
Answers
Answer:
Explanation:
Researchers gather empirical evidence through experimentation or observation. Empirical evidence is information acquired by observation or experimentation. Scientists record and analyze this data. The process is a central part of the scientific method.
Answer:
Science Produces Explanations That Can Be Tested Using Empirical Evidence. Science requires that scientific explanations of phenomena be based on events or mechanisms that can be observed in the natural world. This is how science builds a base of shared observations and ideas to which new knowledge can be added.
Explanation:
The diagram represents liquid water in a pan on a hot plate. The liquid water is boiling and changing into water vapor. The process of boiling water is considered to be a
Answers
Answer:
I guess c?
Explanation:
take my answer by a grain of salt but the process of boiling water leads to physical change because eventually all water will become water vapor if boiled long enough
European and North America coal fields line up.
A.true
B.false
Answers
Answer:
The Answer Is A
Explanation:
What kind of change, physical or chemical, is happening when wood burns? How can you tell?
Answers
Answer:
Wood changes chemically to carbon dioxide when it burns and leaves a residue of ashes. These ashes cannot be changed back to wood. So it is a chemical change.
physical means it can go back to its shape; chemical it cannot.
for example when wood burns you can’t get that wood back to before it was burned!
hope this helps!
Which formation is one feature of karst topography?
caves
kettles
meanders
oxbow lakes
Answers
Answer:
caves, Karst describes a distinctive topography that indicates dissolution. Karst terrains are characterized by the presence of caves, sinkholes, sinking streams, and springs. Understanding caves and karst is important because as much as a quarter of the world's population depends upon freshwater supplied from karst areas.
Explanation:
hope this helps have a good rest of your night :) ❤
The formation that serves as one feature of karst topography is Caves.
Karst topography can be regarded as a landscape with features of cave and sinkhole.
It is usually found in regions that consists plentiful rainfall in which the bedrock have some carbonate-rich rock.
Other characteristics of Karst topography are:
fissures underground streams. SinkholeTherefore, option A is correct because cave serves as as a formation of feature of karst topography
Learn more about karst topography at:
https://brainly.com/question/2794887
PLEASEE HELP ASAP WILL MARK BRAINLIEST
This is on Asexual reproduction and I don't understand this at all so pleasee help
Answers
Answer:A,A,b,b
Explanation:i think i am learning this right now too!
Describe how fossil fuels are converted into usable energy
:)
Answers
Answer:
Fossil fuel power plants burn coal or oil to create heat which is in turn used to generate steam to drive turbines which generate electricity.
Explanation:
Fossil fuels are used in power plants to make steam. Steam drives turbines which coupled to generator produce electrical energy. Electrical power is used in all industries, domestic used where energy is needed.
petroleum products like oil, gas are used in motor vehicles, ships, airplanes. They burn and give the power for transport.
Fossil fuels are burned under different conditions in engines, boilers, etc which produce heat energy and then converted into mechanical energy.
gas and oil are used to heat homes.
Answer: HEY HAVE A GREAT DAY
fossil fuels are converted into usable energy by first collecting, and then I'm pretty sure its turned into gas and turns turbines.
Explanation:
Fossil fuel are energy buried within the earth that could used as energy source for consumption. Most sources of earth's energy comes from fossil fuels
I DId this in class and asked on brianly
PLS MARK ME BRAINLIEST
A chemist is using 341 milliliters of a solution of acid and water. If 16.1% of the solution is acid, how many milliliters of acid are there? Round your answer to the nearest tenth.
Answers
We need to assume that the acid in question is a liquid (not a solid or a gas),
and we need to assume that the 16.1% is specified as 16.1% (v/v) ,
where "v/v" means volume in volume,
meaning 16.2 milliliters of that acid are contained in 100 milliliters of the solution of acid and water.
With those assumptions, the ratio of acid volume to solution volume is
x/342 = 16.1/100 , where x= number of milliliters of acid in the 342
milliliters of solution.
x/342 = 16./100 ---> x=342x16.1/100 ---> x=55 (Rounded)
Acceleration due to gravity =
100 m/s2
9.8 m/s2
62.3 m/s2
1.2 m/s2
Answers
Answer:
9.8
Explanation:
no explanation bbbbnnnnnnnnnnnnnnnnnnn
I need help QUICKLY!!!!!!!!
Answers
Answer: Do you take Ms. Reyes
Explanation: The answer is Outside air, Nose, Lungs, Bloodstream, Cell
Answer:
outside air
nose
lungs
bloodstream
cell
True or False: Thermal energy can not transfer when particles of matter are in direct contact with each other, as they are not in solids, liquids,or gases.
Answers
Answer:false
Explanation:
A period of inactivity in a plant, where it does not grow to survive unfavorable environmental condidtions
Answers
Answer:
Dormancy
Explanation:
please help!!!!!!!!!!!!!!!!!!!
Answers
Answer:
Your body cells use the oxygen you breathe to get energy from the food you eat. This process is called cellular respiration. During cellular respiration the cell uses oxygen to break down sugar. Breaking down sugar produces the energy your body needs.
Explanation:
Brainly pls
1. The ocean is also known as Earth's _____. *
A. evaported cloud
B. Giant Collector
C. Condensed Liquid
D. None o the above
Answers
Answer:
Earth is often called the ocean planet because it is 70% covered in water.
Explanation:
D.
discord anyone? RaTqUeEn2#8785
Deforestation is the __________.
A.
cutting down or burning of all the trees in a forested area
B.
replanting of trees in an area where trees were cut down
C.
managing of forests for the benefit of people
D.
adding of nutrients to topsoil in order to make land more arable
Please select the best answer from the choices provided
A
B
C
D
Don't have to answer!
Answers
Plz HELP ITS SCIENCE!
Answers
-acts like a skin
- most selectively controls what is inside and outside of the cell
-rigid
Cell membrane:
-gives a plant cell
-not rigid
1) Acts like skin.
2) Rigid.
3)Gives the plant cell its shape.
Cell Membrane
1) is not rigid.
2) More selectively controls what goes in and out of the cell.
Would the following atoms have similar reactivity?
A) Elements in Group 2 have 2 energy levels.
B) Elements in Period 7 have 7 valence electrons.
C) Elements in Group 13 have 13 valence electrons.
D) Elements in Group 13 have 13 valence electrons.