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
stich3 [128]
3 years ago
14

Which substance can not be decomposed by a chemical change?

Chemistry
2 answers:
Dvinal [7]3 years ago
7 0
Copper. It's copper because it is an element, not a compound substance, so its already in its basic chemical form ^u^
max2010maxim [7]3 years ago
5 0
B. Copper since the rest of the choices are compounds. Copper is an element.
You might be interested in
Given the atomic weights of carbon, 12.01; hydrogen, 1.01; and oxygen, 16.0, what is the molar mass of glucose?
Elan Coil [88]
The molar mass of any molecule is the sum of its constituent elements atomic masses. In glucose, there are six carbon atoms, twelve hydrogen atoms, and six oxygen atoms. If we show this mathematically:
6(12.01 g/mol) + 12(1.01 g/mol) + 6(16.00 g/mol) = 180.18 grams/mole is the molar mass of glucose
The answer is C) 180.18 grams
3 0
3 years ago
Read 2 more answers
Which is a substance that could be found in air, water or soil that is harmful to humans or animals?
tatyana61 [14]
Hello!

A substance that could be found in air, water or soil that is harmful to humans or animals is a Pollutant.

The other substances cannot be found in air, water or soil. Fossil fuels can only be found in soil, smog can only be found in the air, and carbon dioxide can be found in the water or air. 

Pollutants 
are substances that have harmful effects and damage the environment.  Some examples of pollutants are Carbon Monoxide (air), Lead (soil) and Insecticides (water). 

Have a nice day!
6 0
2 years ago
.please subscribe to my channel I really need subscribers and like.... channel name :- being bombastic​
lys-0071 [83]

Answer:

jjjjjjjjuuuu unthinkable

Explanation:

Judith outnumbered have

6 0
3 years ago
3) Classify the following statements as either a theory (T), a fact (F), a law (L), a
mrs_skeptik [129]

Answer:

Explanation:

Before answering the questions, it is important to define these given terms:

  1. Theory: a theory can best be simply defined as an explanation of a phenomenon usually drawn from careful observation.
  2. Fact: fact is a proven information that has been known to exist or occur.
  3. Law: scientific laws are usually mathematical expressions that seeks to explain a certain observation with some exceptions.
  4. Belief: it is an ideology based on wether a thing exists or not.
  5. Hypothesis: It is simply a scientific guess or an untested idea.

a) There are 2 countries in North America: Belief

The idea that there are just two countries in North America is wrong. A person might choose to hold on to this false knowledge despite strong evidence that can annul this system of reasoning. He or she might be coming from the point view that in terms of economic prowess, there are just two countries in North America. This is more of a belief.

b) If I jump out a window I will die: belief.

This is more of a belief, there is nothing to prove that if one jumps out of a window, death is inevitable.

c) Through the process of natural selection humans, chimpanzees and

gorillas evolved from a common ancestor species.: Theory

This is a theory that seeks to provide a scientific basis to evolution. To come to this conclusion, observations have been made on humans, chimpanzees and gorillas.

d) Energy can be converted into matter in ratio of E=mc² : Law

This is a scientific law which has been simplified in form of mathematical expression to show the relationship between mass energy.

e) Canada is the greatest country on earth: Belief

This is a mere belief. Almost every Canadian can attest to this assertion. It is a thing of national pride and loyal for one to belief their country is the greatest.

f) Illness comes from microscopic germs, some of which, bacteria can be

seen under the microscope and cultivated outside a host, and others,

viruses, are too small to see under the microscope: Fact

It is a proven fact that germs causes diseases.

7 0
3 years ago
Read 2 more answers
Nsnjknfjksbjfnjfjnjk
kodGreya [7K]
I think it’s A but don’t quote me on that lol
5 0
2 years ago
Read 2 more answers
Other questions:
  • Which group of elements ,in the periodic table, would most likely be used for electrical wires?
    14·1 answer
  • What is the mass in grams of the Hope Diamond, the world's largest blue diamond at 44.4 carats?
    5·1 answer
  • 16. When a reaction is at equilibrium
    6·1 answer
  • Please help <br><br>look at the image<br>which one is it
    12·1 answer
  • . What is the percentage error for a mass measurement of 17.7 g, given that the correct value is 21.2 g?
    6·1 answer
  • How to learn chemistry?​
    12·1 answer
  • Choose the balanced chemical equation below that best represents the following reaction:
    11·1 answer
  • Is the following set of quantum numbers a valid set?<br><br> [3, 2, 2, 1/2]
    9·1 answer
  • QUESTION 4
    5·1 answer
  • Which of the following is a reasonable ground-state electron configuration? (3 points)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!