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Harrizon [31]
3 years ago
8

Is silver tarnishing a physical change or a chemical change?​

Chemistry
1 answer:
Shalnov [3]3 years ago
6 0

Answer:

chemical

Explanation:

Some bronze objects tarnish to a dark brown color. Chemical properties can be identified by the changes they produce. The change of one substance into another substance is called a A piece of wood burning, an iron fence rusting, and a silver spoon tarnishing are all examples of chemical changes.

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A neutral atom has 1 valence electron and its atomic mass is 39. How many
uranmaximum [27]

Answer: I think probaly wrong so probaly dont

listen to me

Explanation:

5 0
3 years ago
Explain the difference between an endothermic and an exothermic reaction using the concepts of potential energy, stability, and
kakasveta [241]
An Exothermic reaction releases energy into the surroundings and so the products have more potential energy then the reactants. The enthalpy change is a negative value. Whereas, an endothermic reaction involves the absorption of energy into the system and so the reactants have more potential energy than the products. The enthalpy change is a positive value. This is clearly represented in energy profile diagrams.
4 0
3 years ago
Please help me with this question I will make you brainliest!! SCIENCE
schepotkina [342]

Answer:

A skateboarder coming down the ramp.

When something is going up against ( up or <u><em>down</em></u> ) something it causes friction.

Hope this helps!

5 0
3 years ago
This is very urgent please hurry!!?!!??!
yawa3891 [41]

Answer:

The greatest acceleration when the unbalanced force is applied will be experienced in :

A) The box with a mass of 2 kg

Explanation:

According to second law of motion the external unbalanced force is directly proportional to rate of change of momentum.

F = (Final momentum - initial momentum)/time

or

Force is equal to the product of mass and acceleration

F = m x a

Here a= acceleration

m = mass of the object

If Force is constant then acceleration is inversely proportional to mass

a =\frac{F}{m}

A) The box with a mass of 2kg

F = 8 N

a =\frac{8}{2}

a = 4 m/s2

B) The box with the mass of 4kg

a =\frac{8}{4}

a = 2 m/s2

C) The box with a mass of 6kg

a =\frac{8}{6}

a = 1.33 m/s2

D) The box with a mass of 8kg

a =\frac{8}{8}

a = 1 m/s2

3 0
4 years ago
A student is monitoring the pressure of a gas in a rigid container. The amount of gas particles and the volume of the container
GenaCL600 [577]

a.The gas pressure will decrease.

Explanation:

If in a rigid container, the amount of gas particles and volume of the container is held constant, the pressure will decrease if the temperature is reduced.

  • Gases are highly random particles and they require a high amount of kinetic energy to be in their state of matter.
  • In a condition where volume of container is fixed, the amount of gas particles is fixed and the temperature reduced, the kinetic energy of the gas particles will directly reduce.
  • The kinetic energy of gases is directly related to temperature.

Learn more:

kinetic theory brainly.com/question/9924094

#learnwithBrainly

6 0
4 years ago
Read 2 more answers
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