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
slamgirl [31]
3 years ago
14

Consider the statement: "Copper is a red-brown element obtained from copper sulfide ores by heating the ores in air, which forms

copper oxide. Heating the copper oxide with carbon produces impure copper, which is purified by electrolysis." How many of these, I) color II) heating with carbon III) purification by electrolysis are physical properties or changes?
Chemistry
1 answer:
Misha Larkins [42]3 years ago
4 0

Answer:

1, just I) color.

Explanation:

Physical properties are the properties that can be observed without changing the composition of a substance, such as color, temperature, density, and boiling point.

A physical change is a change in the substance that only modifies its aggregation state, such as solidification, and boiling.

Chemical properties are the properties that need a reaction to being observed, such as the combustibility, which needs a combustion reaction to being quantified.

When a chemical reaction occurs, and the composition of the substance change, it's a chemical change.

So, the heating copper with carbon is a chemical reaction, and purification by electrolysis is too. Color is the only physical property.

You might be interested in
Write the ions present in the solution of cuso4. express your answers as chemical formulas separated by a comma. identify all of
Contact [7]
Copper Sulfate (CuSO4) compound is basically comprised of Copper (II) ion and Sulfate ion. Ions are C<span>u2</span>+ and S<span>O4 2</span><span>−</span>.

<em>ANSWER:</em><em>Cu 2+ and SO4 2-</em>
8 0
3 years ago
Read 2 more answers
Please help fast! I will give brainliest!
Kaylis [27]

Answer:(c)

Explanation:

3 0
2 years ago
In beta decay, what is emitted? A. an electron B. a helium-4 atom C. a neutron D. a photon E. a radionucleus
myrzilka [38]

Answer: A. an electron

<u>Beta particles are electrons or positrons (electrons with positive electric charge or antielectrons).</u> Beta decay is a type of radioactive decay in which a beta ray is emitted from an atomic nucleus.

<u>Beta decay occurs when, in an unstable nucleus with too many protons or too many neutrons, one of the protons or neutrons transforms into the other.</u> In beta minus decay, a neutron is broken down into a proton, an electron, and an antineutrino (the neutrino antiparticle, meaning it has an opposite charge to the neutrino). In beta decay plus, a prototype breaks down into a neutron, a positron and a neutrino.

4 0
2 years ago
Read 2 more answers
Question 5 of 5
rjkz [21]
Probably Fresh vegetables, it can rot out, that’d be my guess, it’s not canned
8 0
2 years ago
Read 2 more answers
Which of the following ion is the least and the most hydrated? OH- , Li+, K+, Na+​
vodomira [7]
I don’t know either lol
5 0
2 years ago
Other questions:
  • How to find density with radius, height, and mass.
    8·1 answer
  • CH3COOH mc015-1.jpg CH3COO– (aq) + H+(aq) What will happen to the chemical equilibrium of the solution if CH3COONa is added?
    8·1 answer
  • Which of the following could be the name of the substance in box ‘c` choose only one box:
    13·1 answer
  • Explain why molecules of water were attracted to the negatively charged plastic tube while molecules of cyclohexane were not. Dr
    10·1 answer
  • Which list contains three major greenhouse gasesfound in earth’s atmosphere?(1) carbon dioxide, methane, and water vapor(2) carb
    15·2 answers
  • A chemist adds of a aluminum chloride solution to a flask. Calculate the mass in grams of aluminum chloride the chemist has adde
    12·1 answer
  • What contribution to atomic theory resulted from albert einstein’s work?
    14·2 answers
  • A helium laser emits light with a wavelength of 633nm. what is the frequency of light
    14·1 answer
  • Write the net ionic equation for the reaction that occurs, if any, when gold is placed in a solution of hydrobromic acid
    12·1 answer
  • The molar solubility of cui is 2. 26 × 10-6 m in pure water. Calculate the ksp for cui.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!