There are many different ways to classify matter, but one way is to use only two categories for all matter. All matter can be classified as eithera. liquids or gases.
b. atoms or molecules.
c. elements or compounds.
d. mixtures or substances.
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Answer:C
Explanation:cause I just took the test and I can confirm
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17. Which of the following is true about an electrolytic cell? It changes electrical energy into chemical energy. It is the type of cell used in electroplating It uses an electric current to make a nonspontaneous reaction go. All of the above 18. The products formed in the net reaction of the electrolysis of water are ____. aqueous hydrogen ion and hydroxyl ion hydrogen gas and oxygen gas liquid hydrogen and oxygen gas liquid oxygen and hydrogen gas 19. What occurs in electroplating? decomposition of a metal layer decomposition of a salt layer deposition of a metal layer on a material deposition of a salt layer on a metal
In which type of reaction do two or more substances combine to produce a single substance?(1) synthesis (2) decomposition (3) single replacement (4) double replacement
All isomers of octane have the same(1) molecular formula (3) physical properties (2) structural formula (4) IUPAC name
What three things happen in order for a chemical reaction to occur?
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These negative gasses get modified and then remain in the atmosphere without the possibility of leaving, which is why the greenhouse effect occurs.
Answer;
Carbon dioxide and water
The atmosphere's variable gases that most influence the greenhouse effect are carbon dioxide and water.
Explanation;
- Green house effect is a phenomenon where the radiation from the atmosphere of the earth warms the surface of the earth to a temperature above what it would be. It occurs when the atmosphere traps heat radiating from the earth towards the space.
- Certain gases in the atmosphere block the heat from escaping, these gases are called the green house gases. These gases contribute to the green house effect, they include, water vapor which is the most abundant green house gas, carbon dioxide a very important component of the atmosphere, methane, nitrous oxide, CFCs, etc.
spatial
particular
contrast
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0-6 is an acid
8-14 is a base
7 is neutral
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The solar energy is generated in the inner core of sun by nuclear fusion where hydrogen isotopes fuse together to form helium nuclei. This process is associated with the release of greater amount of energy.
What is nuclear fusion ?
Nuclear fusion is the process of fusing of two light nuclei to form a heavy nuclei. Whereas, breaking of a heavy unstable radioactive isotope is called nuclear fission. Both nuclear processes release tremendous energy.
The source of heat and light energy in sun and other stars is nuclear fusion in their core. Sun and stars are abundant in hydrogen gas. One protons and deuteron fuses together to form a helium nuclei.
This process repeats for major part of the hydrogen gas present in stars make them globes of fire and heat. Fusion takes place in the inner core of these stars. That is inside the chromosphere.
Find more on nuclear fusion:
#SPJ6
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To solve this we use the equation,
M1V1 = M2V2
where M1 is the concentration of the stock solution, V1 is the volume of the stock solution, M2 is the concentration of the new solution and V2 is its volume.
.675 M x V1 = .25 M x 1.3 L
V1 = 0.48 L or 480 mL
If a chemist wants to make 1.3 L of 0.25 M solution of KOH by diluting a stock solution of 0.675 M KOH, the chemist would need to use 480 mL of the stock solution.
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Answer: Option (a) is correct.
Explanation:
When an object moves from its initial position, it acquires some energy. This energy is called kinetic energy, as it is governed by the motion of an object.
The formula to calculate kinetic energy is as follows.
kinetic energy =
where,
m = mass of object
v = velocity of object
Thus, it is concluded that kinetic energy is the energy an object has due to its motion.