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
Yanka [14]
3 years ago
8

What would indicate that a physical change takes place when copper is drawn into wire

Chemistry
2 answers:
dedylja [7]3 years ago
5 0
The shape of the copper would change. 
kykrilka [37]3 years ago
5 0

Explanation:

A physical change is defined as a change that does not bring any difference in chemical composition of a substance.

For example, shape, size, mass, volume, density, etc of a substance are all physical properties.

So, when copper is drawn into wire then there will occur change in its shape but there will not be any change in its chemical composition.

Whereas when a change in chemical composition of a substance occurs then it is known as a chemical change.

Hence, we can conclude that change in the shape of copper when it is drawn into wire indicates a physical change.

You might be interested in
If 16g of <img src="https://tex.z-dn.net/?f=CH_%7B4%7D" id="TexFormula1" title="CH_{4}" alt="CH_{4}" align="absmiddle" class="la
sammy [17]

43.56 grams of  are produced if 16g of  CH4 reacts with 64g of O2.

Explanation:

Balance equation for the reaction:

CH4 + 2O2⇒ CO2 +2H2O

Data given : mass of CH4 =16 grams  atomic mass = 16.04 grams/mole

                    mass of water 36 gram  atomic mass = 18 grams/moles

                   mass of CO2=?                atomic mass = 44.01 grams/mole

number of moles = \frac{mass}{atomic mass of one mole}    equation 1

number of moles in CH4

   n = \frac{16}{16.04}

       = 0.99 moles

Since combustion is done in presence of oxygen hence it is an excess reagent and methane is limiting reagent so production of CO2 depends on it.

From the equation

1 mole of CH4 gave 1 mole of CO2

O.99 moles of CH4 will give x moles of CO2

\frac{1}{1} = \frac{x}{0.99}

x = 0.99 moles of carbon dioxide

grams of CO2 = number of moles x atomic mass

                         = 0.99 x 44.01

                          = 43.56 grams of CO2 is produced.

4 0
3 years ago
Chemistry problem somone help!!
Mrrafil [7]

Answer:

Try to figure it out U CAN DO THIS I BELIEVE

Explanation:

4 0
3 years ago
Increasing the volume of a given amount of gas at constant temperature causes the pressure to decrease because
mestny [16]
Because the molecules are more spread apart.

(gas spread)
5 0
3 years ago
Read 2 more answers
How does the value of kc in n2o4(g)⇋2no2(g) kc=[no2]2[n2o4] depend on the starting concentrations of no2 and n2o4?
Vlad [161]
<h3><u>Answer;</u></h3>

The value of Kc does not depend on starting concentrations.

<h3><u>Explanation;</u></h3>
  • <em><u>At constant temperature, changing the equilibrium concentration does not affect the equilibrium constant, because the rate constants are not affected by the concentration changes. </u></em>
  • When the concentration of one of the participants is changed, the concentration of the others vary in such a way as to maintain a constant value for the equilibrium constant.
8 0
4 years ago
Which substances ionize when they dissolve?
noname [10]
<h3>Answer:</h3>

Ionic compounds

<h3>Explanation:</h3>

What are ionic compounds?

  • Ionic compounds are compounds that are formed due to ionic bonds between atoms.
  • Ionic bonds are formed between metallic atoms and non-metallic atoms.

What are examples of ionic compounds?

  • Examples of ionic compounds include, KCl, NaBr, MgCl₂, etc

How do ionic compound ionize in water?

  • Ionic compounds ionizes when dissolved in water to form mobile ions.
  • When dissolved in water they may serve as electrolytes due to the presence of free ions which will be responsible for conduction of electricity.
  • For example, NaCl ionizes to form Na⁺(aq) and Cl⁻(aq).
6 0
3 years ago
Other questions:
  • The atomic number of the sodium atom is 11. The atomic mass number can be estimated by rounding the atomic mass to 23. From this
    5·1 answer
  • What hybridization is required for central atoms that have a tetrahedral arrangement of electron pairs? A trigo- nal planar arra
    6·1 answer
  • Who did Churchill and Roosevelt appoint to lead the Normandy invasion?
    14·2 answers
  • Which solution will have the highest ph? the ka of hclo is 3.8 × 10−8.
    15·1 answer
  • The distinctive symbol used to identify radioactive materials is the:
    9·1 answer
  • Pls answer fast. thanks !
    6·1 answer
  • What is the formula for potassium sulfide? <br> a. k2s2 <br> b. k2s <br> c. ks <br> d. ks2
    10·2 answers
  • A liquid is determined to be an acid or base depending on the type of (Blank)
    13·2 answers
  • Which statement describes the blood type of a person with the alleles IAi?
    5·2 answers
  • A sample originally contains 24 grams of a radioactive isotope. After 18 days, 18.8 grams of the isotope remain in the sample. W
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!