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dezoksy [38]
2 years ago
6

Select the correct answer. Which statement is true of a chemical change? A. It involves changes in the molecular structure. B. I

t involves changes in phase but not changes in the molecular structure. C. It involves dissolving one substance into another. D. It involves a change in the state, or phase, of a substance. E. It involves the process of separating two or more dissolved substances.
Chemistry
2 answers:
Lubov Fominskaja [6]2 years ago
8 0
The Correct Answer is D
wolverine [178]2 years ago
4 0
I think the answer is something within..
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describe how a physical property such as mass or Texture can change without causing a change in the substance
Tom [10]

You have to be very careful with this question. A change in mass can also occur in chemical changes especially if you have too much of something. For example

CH4 + 1.5 02 ===> CO2 + H2O

If you have too much of either CH4 or O2, there will be some CH4 or O2 left over. There has been a change in mass that you have too much of.

However that is not the point of the question. It is just something you need to be aware of.

Suppose you have a piece of aluminum and you take a course grinder after it. You will change the texture of the side you took the grinder to. If the aluminum has been anodized (a color has been put on it's surface), you may grind the color off or if it is just plain aluminum, you may roughen the surface, but you won't change what the aluminum will do chemically.

You may need only a small portion of the aluminum and you grind off just what you need. That will change the mass of both what you took off and the piece that you want, but the aluminum will still do whatever chemical property you need to use.

So you can change both texture and mass without changing the chemical properties of the substance whose mass or texture you are changing.

3 0
3 years ago
An element has 8 protons and 8 neutrons in its nucleus and 8 electrons revolving around the nucleus. What is the atomic number a
Molodets [167]
C.

Protons is 8 so the atomic number will be 8.

Number of neutrons= atomic mass - atomic number

16-8 = 8.
5 0
3 years ago
Which of the following forms of matter can be classified as being
Minchanka [31]
The answer is SOLUTIONS
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30) When ionic bonds are formed, metallic atoms tend to
Strike441 [17]

Answer:

B is the answer

Explanation:

7 0
3 years ago
How many grams do 6 × 1020 atoms of helium weigh? Answer in units of g.
Rzqust [24]
1.2204504e-18   i think   hope this helped 
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