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
djyliett [7]
3 years ago
7

Which of these is an example of a chemical change?

Chemistry
2 answers:
egoroff_w [7]3 years ago
8 0

A. Fireworks exploding is the answer

slavikrds [6]3 years ago
7 0

Hey There,

Your answer is A) Fireworks exploding

This is an action of chemical change. Grinding powder, melting cheese and ironing a shirt are all action of physical change. You are just changing their form, not performing a chemical change. When fireworks explode, a chemical inside of them changes.

Best Of Luck,

- I.A. -

You might be interested in
Pls help need this to pass
SOVA2 [1]

Bulk property  are those properties that does not depend on the amount of substance.

<h3>What is a bulk property?</h3>

The term bulk property can also be referred to as the intensive properties of a substance. These are those properties that does not depend on the amount of substance. This means that they are characteristic of the material.

The percent by mass refers to  the percentage of an atom that is present in a compound. If we must be able to calculate the percentage by mass then we must know the mass of the sample and the masses of the elements found in the sample.

Learn more about bulk properties:brainly.com/question/25960022

#SPJ1

8 0
2 years ago
Read 2 more answers
A recipe calls for 1.2 cups of oil. How many liters of oil is this?
lapo4ka [179]
0.284 liter is the answer
3 0
3 years ago
How much energy is required to heat 40g of water from -7 degrees Celsius to 108 degrees Celsius (Lf= 335,000J/Kg for ice)
solniwko [45]
The   energy  required  to heat  40g  of water  from -7 c  to 108 c is
1541000  joules

     calculation

Q(heat)=  M( mass)  x c(specific heat capacity) xdelta t( change in temperature)

M=  40g=  40/1000= 0.04 Kg
C=  335,000 j/kg/c
delta T   (    108 --7= 115  c)

Q  is therefore   =  0.04 g x  335000 j/kg/c  x 115 c  = 1541,000  joules


6 0
3 years ago
Which of the following statements is not true regarding molecular orbital theory? O Bonding molecular orbitals have lower energy
pychu [463]

Answer:

Option c, Two atomic orbitals combine to form one molecular orbital

Explanation:

Molecular orbitals are formed by linear combination of atomic orbitals.

Some of the important facts of molecular orbital theories are as follows:

  • No. of the molecular orbitals formed are equal to the no. of atomic orbitals participated.
  • Half of the molecular orbitals are bonding molecular orbitals and half of the molecular orbitals are anti bonding molecular orbitals.
  • Anti bonding molecular orbitals have energy higher than participating atomic orbitals.
  • Bonding molecular orbitals have energy lower than participating atomic orbitals.
  • Molecular orbitals are that region in the molecule where electrons are most likely to found.

So, among given, option c which is 'atomic orbitals combine to form one molecular orbital' is incorrect.

5 0
4 years ago
If you increase the temperature of a reaction, then the reaction rate will ...
DIA [1.3K]
The answer is B.Increase
6 0
3 years ago
Other questions:
  • How does boyle's law relate to breathing?
    6·1 answer
  • One year ago, you sold a put option on 100,000 euros with an expiration date of 1 year. you received a premium on the put option
    13·1 answer
  • The Bohr model of an atom shows a nucleus with electrons circling around it. What does the Bohr model show that makes it a usefu
    10·1 answer
  • PLEASE HELP Me with this Quickly
    5·1 answer
  • They do on the spiders web form before sunrise what is my this tell you about the air temperature before sunrise
    5·1 answer
  • How is the molecule of substance formed​
    12·1 answer
  • Each element has a unique number of _____
    10·2 answers
  • If the length of a cube is 2.5 cm, the width is 2.5 cm, the height is 2.5 cm and the mass of the
    14·1 answer
  • Ghnsehdtgrjygkuhilh2
    7·1 answer
  • !!!!100 POINTS!!!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!