The difference between light reflection and refraction is simple. In reflection, the light ray striking the plane returns to the originating source or medium as the waves spring off the surface. in refraction, the waves go through the surface and it alters their speed and direction.
Reflection is the bouncing back of light when it strikes a smooth surface. Generally occurs on shinny surfaces that only allow rebounding of light without permitting penetration through it. In this process, light bounces back and returns back in the same direction.
Refraction is the bending of light rays when it travels from one medium to another. This occurs in transparent surfaces that allow bending of the ray to a different medium.
In this process, light changes path i.e travels from one medium to another.
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Increasing the rate of the reverse reaction will cause a shift to the left.
Decreasing the rate of the forward reaction will cause a shift to the left.
Decreasing the rate of the reverse reaction will cause a shift to the right.
Answer: Option (2) is the correct answer.
Explanation:
According to LeChatelier principle, any change in the equilibrium of a chemical reaction will result in shifting of equilibrium which is opposing the change.
Therefore, when we increase the rate of the reverse reaction that is, we move towards left side then this will actually cause a shift to the right hand side which is opposing the change.
Thus, we can conclude that increasing the rate of the reverse reaction will cause a shift to the left is not a result when a change to an equilibrium system is applied.
Explanation:
A precipitate is an insoluble solid that does not dissolve in a chemical reaction or or mixture.
For example,
Therefore, the precipitate formed can be separated out by filtration method.
As this method will most suitably extract the precipitate and separate it from the remaining solution.
Answer:
The magnesium reacted with the oxygen in the air.
Explanation:
For argument’s sake, let’s say that the mass of magnesium oxide was 3 g and that of the oxide was 5 g.
The reaction was
magnesium + oxygen ⟶ magnesium oxide
Mass: 3 g 5 g
Mass of oxygen = 5 g – 3 g = 2 g
The 3 g of magnesium must have combined with 2 g of oxygen to form 5 g of magnesium oxide.
Answer:
Yes, this is possible.
Explanation:
It is possible that a cup of tea and teapot filled with tea has the same thermal energy. This often occurs in the real world, when two different thermal energy bodies are placed next to each other.
When two bodies are placed next to each other and these two bodies have different temperatures, there is a transfer of thermal energy between them, which allows them to present the same thermal energy.
With that we can conclude that the teapot received thermal energy from the stove and passed that energy to the tea that was inside it, in this way, tea and teapot had equal thermal energy. This tea, with high thermal energy, was placed in a cup with low thermal energy. The tea promoted a transfer of heat between him and the cup, allowing them to equalize their temperatures and consequently the thermal energy.
In this way, the cup has the same temperature as the tea, which has the same temperature as the teapot.
Atoms in the liquid water move more slowly.
Atoms in the liquid water move more quickly.
More hydrogen bonds form between the molecules.
When water changes from a liquid to a solid, the atoms move slower and form more hydrogen bonds, giving ice its solid structure.
When liquid water transforms to a solid state (i.e. ice), the motion between water molecules changes. Hydrogen bonds are actually formed, not broken. Because of the decrease in temperature, atoms in the liquid water start to move more slowly, not quickly. This slower movement allows for more hydrogen bonds to form between the water molecules, which is what essentially gives ice its solid structure.
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