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a_sh-v [17]
3 years ago
13

What are Properties that can be recognized only when substances react or do not react

Chemistry
1 answer:
sergiy2304 [10]3 years ago
4 0

Answer:

Chemical properties can be recognized only when substances react or do not react chemically with one another, that is, when they undergo a change in composition. A chemical property of one substance usually involves its ability to react or not react with another specific substance.

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What’s a example of a compound
defon

Answer: Water. H2O

Explanation: a chemical compound is composed of many identical molecules made from more than one element, in this case Hydrogen and Oxygen.

8 0
4 years ago
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Weathering,erosion,pressing and cementing form what type of rock?
wlad13 [49]
Sedimentary Rock because  weathering and erosion breaks down the rock. Then, while the rock is being pressed and cemented, its forms sediments.


6 0
3 years ago
Why can scientist assume elastic collisions as long as the temperature remains constant?
Tema [17]

Answer:

Because in elastic collisions there is no heat emission or absorption.

Explanation:

A collision is considered elastic when the total kinetic energy of the study system is conserved during the collision. Since the total kinetic energy is conserved, heat is not emitted or absorbed during the collision. Since the emission or absorption of heat is what produces changes in temperature, If the system remains at a constant temperature, there were only elastic collisions.

8 0
4 years ago
An alternative definition of electronegativity is: Electronegativity = constant (I.E. – E.A.)where I.E. is the ionization energy
kolbaska11 [484]

The missing data is the value of I.E and E.A for Cl and F, which are, Cl: I.E =1255 kJ/mol, E.A = -348.7 kJ/mol, F: I.E = 1678 kJ/mol, E.A = -327.8 kJ/mol.

Answer:

3.2

Explanation:

The electronegativity is the capacity of an atom to attract an electron in a bond. As higher is it, as higher the electron will be attracted. The ionization energy is the minimum energy necessary to remove one electron of the atom, transforming it on a cation. On the other hand, the electron affinity is the energy that is lost when the atom gains an electron and is transformed on an anion.

Calling the constant as K, and knowing that the electronegative of fluorine (F) is 4.0:

4 = K*(1678 - (-327.8))

2005.8K = 4

K = 2.00x10⁻³ mol/kJ

Thus, for chlorine (Cl):

Electronegativity = 2.00x10⁻³*(1255 - (-348.7))

Electronegativity = 3.2

4 0
4 years ago
Which soil cannot be rolled into balls or clumps
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Silt is the form of soil that is too grainy and dry to be rolled into clumps or balls.
6 0
3 years ago
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