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
dolphi86 [110]
3 years ago
9

Which actions are evidence that a chemical reaction has occurred? Select five options. a change in color the formation of a prec

ipitate a clear liquid becoming cloudy a change in shape the formation of bubbles the formation of smoke
Physics
1 answer:
vladimir1956 [14]3 years ago
8 0

Answer:

A change in color

The formation of a precipitate

A clear liquid becoming cloudy

The formation of bubbles

The formation of smoke

Explanation:

A chemical reaction can be defined as the conversion of reactant into product. The process in which one or more than one substance is converted into one or many different substances.

There are some indications which can provide the evidence that chemical reaction has occurred.

A change in color of the substance, formation or smoke or bubbles. The formation of the precipitate and in case the substance becomes cloudy.

All these evidences show that chemical reaction has occurred.

You might be interested in
Can a physical change, change what a substance is
Elden [556K]
No the substance will remain the same substance as before.
7 0
3 years ago
Matter is __________.
dlinn [17]
<span>Matter is c) something that has mass and occupies space. Everything in our known universe takes up space, and everything is made up of matter. Matter as a concept is not something that can have any unit of measurement put upon it. </span>
6 0
3 years ago
Read 2 more answers
A hopper jumps straight up to a height of 1.3 m. With what velocity did he leave the floor
xxMikexx [17]

The velocity with which the jumper leaves the floor is 5.1 m/s.

<h3>What is the initial velocity of the jumper?</h3>

The initial velocity of the jumper or the velocity with which the jumper leaves the floor is calculated by applying the principle of conservation of energy as shown below.

Kinetic energy of the jumper at the floor = Potential energy of the jumper at the maximum height

¹/₂mv² = mgh

v² = 2gh

v = √2gh

where;

  • v is the initial velocity of the jumper on the floor
  • h is the maximum height reached by the jumper
  • g is acceleration due to gravity

v = √(2 x 9.8 x 1.3)

v = 5.1 m/s

Learn more about initial velocity here: brainly.com/question/19365526
#SPJ1

3 0
1 year ago
Lighting a match changes chemical energy into heat and light. The total amount of energy _____.
Mariulka [41]
Hello.

The answer is <span>remains the same.

</span>The total amount of energy stays the same because the 1st Law of Thermodynamics states that energy can neither be created nor destroyed, it can only change forms. <span>So the chemical energy is just being converted into heat and light.
</span>
Have a nice day
8 0
3 years ago
Read 2 more answers
Help me with physics​
Llana [10]

Answer:

z3

Explanation:

6 0
3 years ago
Other questions:
  • The brick wall (of thermal conductivity 1.12 W/m · ◦ C) of a building has dimensions of 2.8 m by 5 m and is 8 cm thick. How much
    13·1 answer
  • Circle the statements that indicate a chemical property.
    15·1 answer
  • (PLEASE HELP FAST 20 POINTS)
    11·1 answer
  • A book weighing 5 N rests on top of a table. 1) A downward force of magnitude 5 N is exerted on the book by the force of
    12·1 answer
  • A +15 nC point charge is placed on the x axis at x = 1.5 m, and a -20 nC charge is placed on the y axis at y = -2.0m. What is th
    8·1 answer
  • According to Newton’s first law of motion what will an object in motion do when no external force acts on it ?
    14·1 answer
  • Pretend for a day your non-dominant hand is broken and you can’t use of it. Pay attention to the activities you do every day. Yo
    8·1 answer
  • True or false. When populations do not exceed their environment carrying capacity biology communities are stable?
    9·2 answers
  • Season and date for this person
    11·2 answers
  • A 10,000 W motor operates an elevator weighing 5000 N. Assuming no frictional losses, how high is the elevator raised in 10 seco
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!