A food scientist is determined to create a mango that looks exactly like a mango but tastes like salmon. Can this be achieved through artificial selection? Why or why not?

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Answer 1

No because an artificially ripened mango will have a mixture of light and dark yellow colour on it. This indicates that the mango is not completely ripened. The artificially ripened mangoes will seem ripened on the outside but not on the inside.

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Based off of the simulation pulley gizmo; how many people did it take to lift the armchair with a fixed pulley? (Look at Activity A question 2)

Question 5 options:

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5

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Answer:

IN WHICH GRADE YOU ARE????

How can energy transfer affect the physical and chemical properties of matter?

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A physical change is a change in the state or properties of matter without any accompanying change in the chemical identities of the substances contained in the matter. Physical changes are observed when wax melts, when sugar dissolves in coffee, and when steam condenses into liquid water. Other examples of physical changes include magnetizing and demagnetizing metals (as is done with common anti-theft security tags) and grinding solids into powders (which can sometimes yield noticeable changes in color).

The characteristics that distinguish one substance from another are called properties. A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity. Some physical properties, such as density and color, may be observed without changing the physical state of the matter. Other physical properties, such as the melting temperature of iron or the freezing temperature of water, can only be observed as matter undergoes a physical change

Figure :Copper and nitric acid undergo a chemical change to form copper nitrate and brown, gaseous nitrogen dioxide. During the combustion of a match, cellulose in the match and oxygen from the air undergo a chemical change to form carbon dioxide and water vapor. Cooking red meat causes a number of chemical changes, including the oxidation of iron in myoglobin that results in the familiar red-to-brown color change.

chemical change always produces one or more types of matter that differ from the matter present before the change. The formation of rust is a chemical change because rust is a different kind of matter than the iron, oxygen, and water present before the rust formed. The explosion of nitroglycerin is a chemical change because the gases produced are very different kinds of matter from the original substance. Other examples of chemical changes include reactions that are performed in a lab (such as copper reacting with nitric acid), all forms of combustion (burning), and food being cooked, digested, or rotting. Note that the number of atoms for a given element is calculated by multiplying the coefficient of any formula containing that element by the element’s subscript in the formula. If an element appears in more than one formula on a given side of the equation, the number of atoms represented in each must be computed and then added together. For example, both product species in the example reaction, CO2 and H2O, contain the element oxygen, and so the number of oxygen atoms on the product side of the equation is

(1 CO2 molecule × 2 O atoms per CO2 molecule) + (2 H2O molecules × 1 O atom per H2O(molecule) = 4 O atoms

The equation for the reaction between methane and oxygen to yield carbon dioxide and water is confirmed to be balanced per this approach, as shown here: CH 4 + 2O2⟶CO2 + 2H2O

Element Reactants Products Balanced?

C 1×1 = 1 1×1 = 1 1 = 1, yes

H 4×1 = 4 2×2 = 4 4 = 4, yes

O 2×2 = 4 (1×2) + (2×1) = 4 4 = 4, yes

A balanced chemical equation often may be derived from a qualitative description of some chemical reaction by a fairly simple approach known as balancing by inspection. Consider as an example the decomposition of water to yield molecular hydrogen and oxygen. This process is represented qualitatively by an unbalanced chemical equation: H2O⟶H2 + O2 (unbalanced)

Comparing the number of H and O atoms on either side of this equation confirms its imbalance:

Element Reactants Products Balanced?

H 1×2 = 2 1×2 = 2 2 = 2, yes

O 1×1 = 1 1×2 = 2 1 ≠ 2, no

H2O to H2 O2 would yield balance in the number of atoms, but doing so also changes the reactant’s identity (it’s now hydrogen peroxide and not water). The O atom balance may be achieved by changing the coefficient for H2O to 2.

2H2O⟶H2 + O2 (unbalanced)

Element Reactants Products Balanced?

H 2×2 = 4 1×2 = 2 4 ≠ 2, no

O 2×1 = 2 1×2 = 2 2 = 2, yes

The H atom balance was upset by this change, but it is easily reestablished by changing the coefficient for the H2 product to 2.

2H2O⟶2H2 + O2 (balanced)

Element Reactants Products Balanced?

H 2×2 = 4 2×2 = 4 4 = 4, yes

O 2×1 = 2 1×2 = 2 2 = 2, yes

These coefficients yield equal numbers of both H and O atoms on the reactant and product sides, and the balanced equation is, therefore:

2H2O⟶2H2 + O2

Types of Chemical Reactions

Humans interact with one another in various and complex ways, and we classify these interactions according to common patterns of behavior. When two humans exchange information, we say they are communicating. When they hit each other with their fists, we say they are fighting

A photograph is shown of a yellow green opaque substance swirled through a clear, colorless liquid in a test tube.

When energy is transferred through one material to another material it affects the bonding between the atoms or moleculesThe bond becomes weak or may stronger .The. it affects the chenical properties like boiling point, melting point etc.The energy also can change the state of matterLike hydrogen gas and oxygen gas turns liquid water .So physical properties are changed

What causes the seasonal changes viewed in the night sky?

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Answer:

If you look at the night sky different

times of the year you see different

constellation.This change due to the

motion of the earth in it's orbit around

the sun.The shift of the sky is really

the motion of the earth around the sun.

Explanation:

Hope it helps

Explanation:

the factors which bring about the chemical reaction

Slow cooling of hot magma leads to the formation of ___________ crystals

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Answer:

Slow cooling leads to the formation of large crystals. If the crystals remain undisturbed while cooling, they grow according to a regular pattern. Magma closer to the surface cools much faster than magma that hardens deep below ground. With rapid cooling, there is no time for magma to form large crystals.

Explanation:

Hope it's help

Answer:

large

Explanation:

speed =________

ate divided by time

rate divided by distance

distance divided by time

time divided by rate

I need answer asap! Plz someone help ! Ill give brainliest!

Answers

Answer:

Distance divided by time is the answer. :)

Explanation:

Distance divided by time

What will a soccer player need to do to change a ball’s position?
1. He must apply gravity to the ball so that the ball will move.
2. He must weigh the ball to determine the motion that needs to occur.
3. He must set the ball in motion by applying a force in the desired direction.
4. He must identify the location of the ball.
First one to answer will get brainliest!

Answers

Answer:

He must set the ball in motion by applying force in the desired direction.

Explanation:

That is how the soccer player will change the ball's position.

Have a good day :)

Answer:

4. He must identify the location of the ball.

Explanation:

If a soccer player needs to change his position, then he will need to identify the location of the ball.

hope this helped.

This is the chemical formula of Nitrogen gas.

N₂

Which of the following is NOT true of nitrogen gas?

A. It is made of two atoms.

B. It is a molecule.

C. It is an element.

D. It is a compound.

Answers

D is incorrect it is not a compound.

Answer:

Explanation:

N₂ is not a compound because it is not made up of two or more different elements - it is only made up of nitrogen atoms

Hope this helps!

Is gravity alone sufficient to explain the behavior of the tinsel in the Levitating-orb system? Explain why.

Answers

Answer:

The object is moving forward

Explanation:

Hop this helps :)

Answer: The orb is attracted to the pipe at first because the orb has a positive charge. As soon as the orb touches the pipe, it picks up a negative charge. Since the pipe is negative and the tinsel orb is now negative, they repel away from each other and the orb levitates!