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
torisob [31]
3 years ago
7

Please help me thanks so much....I’ll mark you?!?!:)))) ( 15 points)

Chemistry
2 answers:
kherson [118]3 years ago
5 0

Answer:

If a substance changes color after being reacted with another substance, it means a chemical reaction has taken place.

Explanation:

A physical change is a change in the form, such as Ice Cream melting, or an Ice Cube melting.

kifflom [539]3 years ago
3 0

Answer:

A physical change has taken place

You might be interested in
The steam engine in a train heats water until it becomes steam. The steam pushes pistons to move the train. The train is changin
Strike441 [17]
The answer to your question is option A.
8 0
2 years ago
Blast furnaces extract pure iron from the iron(III) oxide in iron ore in a two step sequence. In the first step, carbon and oxyg
zavuch27 [327]

Answer:

6 C(s) +  3 O₂(g) + 2 Fe₂O₃(s) →  4 Fe(s) + 6 CO₂(g)

Explanation:

Iron can be formed in two steps.

Step 1: 2 C(s) + O₂(g) → 2 CO(g)

Step 2: Fe₂O₃(s) + 3 CO(g) → 2 Fe(s) + 3 CO₂(g)

In order to get the net chemical equation, we will multiply the first step by 3, the second step by 2, and then add them.

6 C(s) +  3 O₂(g) → 6 CO(g)

+

2 Fe₂O₃(s) + 6 CO(g) → 4 Fe(s) + 6 CO₂(g)

--------------------------------------------------------------------------------------------------

6 C(s) +  3 O₂(g) + 2 Fe₂O₃(s) + 6 CO(g) → 6 CO(g) + 4 Fe(s) + 6 CO₂(g)

6 C(s) +  3 O₂(g) + 2 Fe₂O₃(s) →  4 Fe(s) + 6 CO₂(g)

6 0
3 years ago
Hydrochloric acid + aluminum hydroxide ®
makkiz [27]
The answer is C. and D. water and aluminum
3 0
2 years ago
Kekshebeeosnebwjelrldksbsb
Grace [21]
Hey
Explanation:
The answer is this because
7 0
2 years ago
Read 2 more answers
The ratio of oxygen-16 and oxygen-18 isotopes in plankton fossils in deep-sea sediments can be used to determine ________.
r-ruslan [8.4K]
<span>The ratio of oxygen-16 and oxygen-18 isotopes in plankton fossils in deep-sea sediments can be used to determine past temperatures.</span>
3 0
2 years ago
Read 2 more answers
Other questions:
  • If a reaction mixture initially contains 0.168 MSO2Cl2, what is the equilibrium concentration of Cl2 at 227 ∘C?
    5·1 answer
  • Which layer of earth that have the most nickel?
    9·1 answer
  • What word describes the splitting of a larger atom into smaller ones?
    11·2 answers
  • What is the H+ concentration for an aqueous solution with pOH = 4.01 at 25 ∘C? Express your answer to two significant figures an
    7·1 answer
  • What coefficient of h+ balances the atoms in this half-reaction h+ + mno2 → mn2+ + h2o?
    13·2 answers
  • Does gallium have a roman numeral?
    6·2 answers
  • The standard enthalpy of formation for glucose [c6h12o6(s)] is −1273.3 kj/mol. what is the correct formation equation correspond
    13·1 answer
  • PLEASE HELP I WILL GIVE BRAINLIEST!!! Its due tonight at 12:00
    7·2 answers
  • When small pieces of manganese oxide were added to a solution of hydrogen peroxide, water and oxygen were produced. Manganese ox
    12·1 answer
  • What are the strengths, weaknesses, and implications of risk/benefit analysis as a method for deciding whether a technology shou
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!