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
oksano4ka [1.4K]
2 years ago
5

Classify each of the following as either a physical change or a chemical change:

Chemistry
2 answers:
Nady [450]2 years ago
7 0
A and B are both physical changes. The paper is still paper and the wax is still wax. C and D are both chemical changes. You are changing the log when you burn it. It is no longer a log after it is burned completely and the milk cannot be good after it has went sour. It can’t be changed back.
Taya2010 [7]2 years ago
3 0

Answer:

physical change

a b c

chemical change

d

You might be interested in
What is the purpose of chemistry?
Brut [27]

Answer:

To know more about chemicals and how to utilise them to solve man's probl

7 0
3 years ago
2) Which of the following statements best describes an element?
mixas84 [53]

Answer:

E

Explanation:

The answer woul be E because elements are made of one type of atoms

3 0
3 years ago
Read 2 more answers
Calculate the mass of ZnCl2 produced by the reaction of 49.8 grams of H2. Zn + 2HCl ZnCl2 + H2
tester [92]

Answer:

3300.85 g

Explanation:

Given data:

Mass of ZnCl₂ produced = ?

Mass of H₂ produced = 49.8 g

Solution:

Chemical equation:

Zn + 2HCl     →    ZnCl₂ + H₂

Number of moles of  H₂:

Number of moles = mass/molar mass

Number  of moles = 49.8 g/ 2.056 g/mol

Number  of moles = 24.22 mol

Now we will compare the moles of H₂ with ZnCl₂ form balance chemical equation.

                         H₂              :              ZnCl₂

                          1                :                   1

                        24.22         :              24.22

Mass of ZnCl₂:

Mass = number of moles × molar mass

Mass =  24.22 × 136.286 g/mol

Mass = 3300.85 g

6 0
3 years ago
What is the mass because I already have the volume and density
Bad White [126]

76.88 I think im sorry if wrong

5 0
3 years ago
Which scenario best exemplifies the way a signal is passed down an axon coated with myelin sheath?
goblinko [34]

Runners sprinting short distances in a relay race and handing off a baton scenario best exemplify the way a signal is passed down an axon coated with a myelin sheath.

Axons are long extensions of neurons (or nerve cells) involved in the transmission of nerve impulses away from the cell body. Each nerve cell has an axon that is over a foot long. A nerve cell communicates with another nerve cell by transmitting signals from the branches at the ends of the axon.

Each neuron in the brain has long cables that meander from the body of the cell. These cables, several times thinner than human hair, are called axons and are where electrical impulses leave neurons and are received by other neurons.

Learn more about axons here

brainly.com/question/5956686

#SPJ4

8 0
1 year ago
Other questions:
  • In a relationship with two variables, when one variable becomes larger by a given factor and the other becomes smaller by the sa
    7·2 answers
  • . There are two elements named after the US state that they were discovered in. Who are they?
    12·1 answer
  • How many atoms does an element make up
    12·2 answers
  • Sulfuric acid is essential to dozens of important industries from steelmaking to plastics and pharmaceuticals. More sulfuric aci
    10·1 answer
  • 2. Calculate the molarity of a solution in which 0.50 moles of MgCl2 are dissolved to produce 1.5 liters
    14·1 answer
  • WILL GIVE BRAINLIEST FOR CORRECT ANSWERS W/ EXPLANATION
    7·1 answer
  • 8. Which chemical reaction involves the fewest Hydrogen,
    6·1 answer
  • Why is agar medium used in Petri dishes?
    14·1 answer
  • The relationship between an element's isotope and an element's atomic mass are related by...?
    14·2 answers
  • What is the atomic number for an element with 6 neutrons and a mass number of 10
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!