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
ohaa [14]
1 year ago
10

Which substance cannot be decomposed by a chemical change?

Chemistry
1 answer:
coldgirl [10]1 year ago
6 0

Copper substance cannot be decomposed by a chemical change.

<h3 />
  • When heated, the copper to carbonate breaks down into copper to oxide. The copper carbonate, which is dark in colour, releases carbon dioxide as well.Because they are the simplest chemically, elements cannot be broken down by chemical processes.

  • Elements are those pure compounds that cannot be broken down by reactions, heating, electrolysis, or other common chemical processes. Examples of elements are oxygen, gold, and silver. Its makeup stays the same, though.  One instance of a physical change is melting.  A physical change is when a sample of matter experiences a change in some of its qualities but not in its identity. Water turns into water vapour when it is heated.

Learn more about copper here:

brainly.com/question/493292

#SPJ4

You might be interested in
Which of the following is a group of different species living in the same approximate place
lilavasa [31]
Biosphere. it is a place where plant's and animals live together and they r interconnected to eachother
4 0
3 years ago
Read 2 more answers
What happens at the cathode in an electrolytic cell?<br><br> (Answer is reduction)
melisa1 [442]

Answer:

At the cathode in an electrolytic cell, ions in the surrounding solution are reduced into atoms, which precipitate or plate out on to the solid cathode. The anode is where oxidation takes place, and the cathode is where reduction takes place.

Explanation:

7 0
3 years ago
Read 2 more answers
What is the empirical formula of a compound containing 5.03 grams carbon, 0.42 grams hydrogen, and 44.5 grams chlorine?
PtichkaEL [24]

Answer:

The right choice is CHCl₃

Explanation:

  • <u>To find the empirical formula firstly, change the mass to moles.</u>

For Carbon :

no. of moles = (mass / molar mass) = (5.03 g / 12  g/mol )=  0.42 mol

<u><em>For Hydrogen  :</em></u>

no. of moles = (mass / molar mass) = (0.42 g / 1  g/mol )=  0.42 mol

<u><em>For Chlorine :</em></u>

no. of moles = (mass / molar mass) = (44.5 g / 35.5 g/mol )=  1.25 mol

The ratio for Carbon and Hydrogen is  1 : 1

0.42 mol / 042 mol =1.00

  • <u> Then find a ratio between the moles. </u>

The ratio of Chlorine to both Carbon and Hydrogen is 3:1

1.25 mol / 0.42 mol = 2.98 ≅ 3

So the ratio is 1 C : 1 H : 3 Cl.

So, the right choice is CHCl₃

Carbon usually forms four bonds one to Hydrogen and 3 to Chlorine atoms.

Chlorine usually forms one bond to Carbon atom.

Hydrogen usually forms one bond Carbon atom.

4 0
3 years ago
Read 2 more answers
What do we call matter made you of only one kind of atom?
Temka [501]

Answer:

Matter is any substance, if it is made up of only one kind of atom, then it is an element. Elements consists of atoms with the same weight and same number of protons in the nuclei.

7 0
3 years ago
In table below, there are descriptions of an experiment on samples of three different chemical compounds. Decide whether the com
Ulleksa [173]

Answer:

1. molecular

2. molecular

3. molecular

Explanation:

Molecular compounds typically exhibit covalent compound characteristics. They are pure substances formed when atoms are linked together by sharing electrons while ionic compounds are formed due to the transfer of electrons. Molecular substances tend to melt at moderately warm temperatures (i.e. 50° C) and it is overlapping as seen in compound 1, which makes it to be molecular in nature.

Molecular compounds are not affected by conductivity, hence they are electrically neutral.

Molecular compounds have a strong smell and have freezing and boiling point at accessible temperatures. A clear liquid at room temperature which has a fruity strong smell can be an organic compound. These organic compounds made up of covalent bonds and are molecular in nature.

8 0
3 years ago
Other questions:
  • (THIS QUESTION IS FROM APEX IN COURSE: Physical Science Sem 2
    9·2 answers
  • How can you tell the difference between non metals from metals on the periodic element chart with no colors
    6·1 answer
  • Yo mismo no hablo español, así que espero que esto sea realmente legible--
    8·2 answers
  • I have a question on my Chem homework. It's asking "How many molecules of N2O4 are in 76.3 g N2O4? The molar mass of N2O4 is 92.
    13·1 answer
  • Which type or types of waves are mechanical? A. Longitudinal B. Transverse C.Electromagnetic D.Both Longitudinal and Transverse
    5·1 answer
  • Answer this question pleas
    11·2 answers
  • A type of physical that occurs between two electrically charged particles?
    12·1 answer
  • Balanced equation of sulphur dioxide ​
    11·1 answer
  • Suppose a substance has a heat of fusion equal to 45 calg and a specific heat of 0.75
    10·1 answer
  • 1: Write the positive and negative ions that result when the following compounds are dissolved in an aqueous solution:
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!