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
Mrrafil [7]
3 years ago
8

Which process is an example of a chemical change? drying clothes in the dryer heating a cup of tea chopping a tree activating a

glow stick
Chemistry
1 answer:
coldgirl [10]3 years ago
8 0
Answer:

Activating a glow stick is the example of a chemical change, as snapping one will cause a chemical reaction, causing the glow. All of the other options are physical changes because nothing new is formed. Hope this helps!
You might be interested in
Describe the bonding between sodium chloride and calcium carbonate.
egoroff_w [7]

Answer:

When the transfer of electrons occurs, an electrostatic attraction between the two ions of opposite charge takes place and an ionic bond is formed. A salt such as sodium chloride (NaCl) is a good example of a molecule with ionic bonding

7 0
2 years ago
Please answer the question and explain
Sindrei [870]

Answer:

x=30

Explanation:

I will try to explain with a drawing.

This is a rule of three.

If you are wondering what the rule of three is. It's when u have 3 informations and you solve.

4 0
3 years ago
Write a balanced chemical equation, including states of matter, for the combustion of gaseous benzene, c6h6.
snow_tiger [21]
Almost all hydrocarbon 'burn' reactions involve oxygen; it's by far the most reactive substance in air. 

<span>Hydrocarbon combustions always involve </span>
<span>[some hydrocarbon] + oxygen --> carbon dioxide + steam. </span>

C6H6(l) + O2 (g)--> CO2 (g)+ H2O (g)

<span>Balance carbon, six on each side: </span>
C6H6(l) + O2 (g)--> 6CO2 (g)+ H2O (g)

<span>Balance hydrogen, six on each side: </span>
C6H6(l) + O2 (g)--> 6CO2(g) + 3H2O (g)

<span>Now, we have fifteen oxygens on the right and O2 on the left. </span>
<span>Two ways to deal with that. We can use a fraction: </span>
C6H6 (l)+ (15/2)O2 (g)--> 6CO2 (g)+ 3H2O (g)

<span>Or, if you prefer to have whole number coefficients, double everything </span>
<span>to get rid of the fraction: </span>
2C6H6 (l)+ 15O2 (g)--> 12CO2 (g)+ 6H2O (g)

<span>With the SATP states thrown in... </span>
C6H6(l) + (15/2)O2(g) --> 6CO2(g) + 3H2O(g)
4 0
3 years ago
Were you in ms.secrihrst class in dutchtown middle.
IrinaVladis [17]

NO, why though this is a simple question lol!

4 0
3 years ago
What is the group number of the most metallic group that contains metalloids?
LUCKY_DIMON [66]
V tdyig gfuf knife knivug
7 1
3 years ago
Read 2 more answers
Other questions:
  • A system was prepared with NH3 = O2 = 3.60 M as the only components initially. At equilibrium N2O4 is 0.60M. Calculate the value
    13·1 answer
  • What is the mass number of an ion with 107 electrons, 159 neutrons, and a +1 charge? express your answer as an integer?
    13·1 answer
  • Consider the reaction below. If you start with 2.00 moles of C3H8 (propane) and 2.00 moles of O2, how many moles of carbon dioxi
    13·1 answer
  • Bi2(CO3)3<br> Name of this compound
    10·1 answer
  • What is the molarity of potassium ions in a 0.122 M K2CrO4 solution
    12·2 answers
  • Please help I’ll mark you as brainliest if correct
    15·1 answer
  • Answer the following questions ( image) with the given options.​​
    5·2 answers
  • When did these geologic processes occur?
    9·1 answer
  • The use of lead paint in houses was banned in 1978 due to the health hazards associated with lead, specifically that high levels
    5·1 answer
  • As an electron in an atom moves from a higher energy state to a lower energy state, the atom
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!