1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ede4ka [16]
4 years ago
9

Why do metals lose shine but gold does not?

Chemistry
2 answers:
Gennadij [26K]4 years ago
7 0
This is because gold is melted using the outer most part of the candle flame which has complete combustion whereas metals are not burnt in this way and they react with oxygen to produce metal oxides and so the metal as well as silver loses it shine and gets a blackish appearance whereas gold remains shiny throughout because it does not have reaction with oxygen.
morpeh [17]4 years ago
3 0
Because <span>Gold is a very inert metal, and won't really react with oxygen in the air.

The only reason other metals tarnish, such as copper, silver, steel/iron, is

because they're freely reacting with air, to produce a metal oxide surface layer. </span>
You might be interested in
Which would be the first of the two magnetic mentals in the mixture to be Melted? A. Copper B. Iron C. Nickel D. Yin
marissa [1.9K]

Answer:D. Tin

Explanation:

3 0
3 years ago
EXPLAIN How would you explain the difference between single displacement and
IrinaK [193]
  • The difference between single displacement reaction and double displacement reaction are:

Explanation:

in the chemical reaction an atom in a molecule is replaced by another atom forming the end product .this type of chemical reaction involved only two reactants for example zinc + copper sulphate give us copper sulphate + copper.double displacement reaction is the reaction in which two compounds react together to form two other compounds by mutual exchange of other ions is called double displacement reaction.this type of reaction is involved two or more than two reactants.for example AG and O3 + NaCl give us agcl + nano3

3 0
2 years ago
Question 2
andrezito [222]

Answer:

A.  Peroxide breaking down into water and oxygen

Explanation:

Generally when it comes to changes, there are physical and chemical changes. In physical changes, there are no new substances been formed, however in chemical change new substances are formed.

A.  Peroxide breaking down into water and oxygen

This is a chemical change.

B . Bubbles forming when a pot of water is heated

This is a physical change

C. A pair of jeans soaked in water drying after hanging outside

This is a physical change

D . A block of ice decreasing in size due to a change in temperature

This is a physical change.

Only option A is different from the rest,hence this is the answer.

3 0
3 years ago
In order to synthesize proteins, carbohydrates, lipids, and nucleic acids, cells require _____.
jonny [76]

Answer:

Energy

Explanation:

A sugar group would be used for carbohydrates or nucleic acids. An adenosine group would be used in ATP formation if I recall correct. And disaccharides are just two monosaccharides linked together, so that would also be for carbohydrates. Therefore, energy is the answer.

4 0
3 years ago
A sample of gas at 30 degrees celcius occuoies 2.5 L at 1.3 atm. What volume will the sample occupyif pressure changes to 2 atm
Irina18 [472]

Answer: 1.73L

Explanation:Please see attachment for explanation

3 0
3 years ago
Other questions:
  • The photoionization of N2 in the thermosphere absorbs much of the high-energy radiation coming from the sun. If the ionization e
    14·1 answer
  • A 1.25 g sample of aluminum is reacted with 3.28 g of copper (II) sulfate. What is the limiting reactant? 2Al(s) + 3CuSO4(aq) →
    11·1 answer
  • Determine the value of the equilibrium constant, Kgoal, for the reactionN2(g)+H2O(g)⇌NO(g)+12N2H4(g), Kgoal=?by making use of th
    8·1 answer
  • Describe how you would prepare exactly 80 ml of a 0.2 M solution of glycerol in water. The molecular weight of glycerol is 92.1
    5·1 answer
  • How many moles of potassium are in 3.78 x 10^21 atoms of K?
    14·1 answer
  • Easy definition for atom and atomic mass
    10·2 answers
  • What is the purpose of continuing to heat a substance after it reaches a temperature plateau?
    5·1 answer
  • Calculate the minimum mass of ammonia needed to produce 396 kg of ammonium sulfate, (NH4)2SO4, and excess sulfuric acid.
    12·1 answer
  • Aromatic compounds aliphatic compounds
    10·1 answer
  • In one species of bird, there are three varieties of feather color. What is this an example of?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!