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
elixir [45]
3 years ago
9

What chemical changes happen at school

Chemistry
1 answer:
kykrilka [37]3 years ago
8 0

Burning, cooking

Explanation:

Chemical changes that happens in school are:

Cooking of meals

 Burning of wastes

 Chemical reactions in laboratories

Rusting of iron used in construction

  • A chemical change is a change that produces new kinds of substances.
  • These changes are usually accompanied by energy and mass changes.
  • Most of such changes are not reversible.

Chemical changes are driven by change in chemical properties of matter.

In a school, iron components might begin to rust. This is a chemical change.

learn more:

Chemical change brainly.com/question/9388643

#learnwithBrainly

You might be interested in
Explain how the complexity and diversity of living things has changed over time
Oduvanchick [21]

Answer:

Dylan invested $ 600 in a savings account at a 1.6 % annual interest rate . He made no deposits or withdrawals on the account for 2 years. The interest was compounded annually . Find, to the nearest cent, the balance in the account after 2 years. a₁ What information from the question is important ? b . How much does Dylan have in his bank account after 2 years ? Show work .

4 0
2 years ago
A "half-reaction” is one which may:
DaniilM [7]

Answer:

d

Explanation:

8 0
3 years ago
Calculate the mass of 2.50 mol of methanol.
solmaris [256]

Answer:

60g

Explanation:

Moles = mass / mollar mass

Mass = Moles x mollar mass

Mass = 2.50 x 24

Mass = 60g

7 0
3 years ago
Read 2 more answers
List three quantum numbers you know
Serhud [2]

Answer:principle quantum number

Angular quantum number

Magnetic quantum number

Spin quantum number

Explanation:

3 0
3 years ago
Read 2 more answers
the radius of a palladium atom is 137 pm. how many palladium atoms would have to be laid side by side to span a distance of 4.25
Rudiy27
4.25mm / 137pm = 31 021 897.8
7 0
3 years ago
Read 2 more answers
Other questions:
  • What mass of manganese(II) chloride must react with sulfuric acid to release 52.5 mL of hydrogen chloride gas at STP?
    12·1 answer
  • In order to understand the prehistory of the Hawaiian island of Lana'i better, anthropologists Maria Sweeney, Melinda Allen, and
    6·1 answer
  • Blue vitriol is commonly used in industrial dyeing processes. what is the chemical formula for blue vitriol, whose systematic na
    7·1 answer
  • Select the correct answer.
    7·2 answers
  • Sodium hydroxide and magnesium chloride react as shown by this equation: 2NaOH + MgCl2 → Mg(OH)2 + 2NaCl. Suppose the reaction b
    7·1 answer
  • Which of the following is an nonmetal?<br> A. He<br> B. Re<br> C. Cu<br> D.Hg
    7·1 answer
  • Which is the best acid to use in the preparation of a buffer with ph = 3.3?
    8·1 answer
  • Use Hess's Law to determine the enthalpy change (∆H) for the reaction: ClF + F2 → ClF3 Given: 2ClF + O2 → Cl2O + F2O. ∆H=167.4kJ
    14·1 answer
  • 200g of water at 34.5°C are added to 150g of water at 87.6°C. What is the final temperature of the mixture?
    12·1 answer
  • What quantity is the same among atoms of the same element?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!