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
Komok [63]
3 years ago
12

Question 8 (1 point)

Chemistry
1 answer:
Stells [14]3 years ago
7 0

bro... come on

you better than that big bro. it literally gave u the answer

You might be interested in
8. Classify each of the following changes as physical or chemical: (a) coal burning (b) ice melting (c) mixing chocolate syrup w
IrinaK [193]

Answer:

(a) coal burning: chemical change

(b) ice melting: physical change

(c) mixing chocolate syrup with milk : physical change

(d) explosion of a firecracker: chemical change

(e) magnetizing of a screwdriver: physical change

Explanation:

A physical change changes the physical form or the appearance or the property of the substance, but the chemical composition of the matter remains the same. Such a change is reversible in nature.  

Whereas; a chemical change involves a chemical reaction, resulting in the change in the chemical composition of the matter. A chemical change results in the formation of a new substance and is generally irreversible in nature.

(a) coal burning: It is a chemical change because the combustion of coal changes its chemical composition. When coal (carbon) is burned carbon dioxide is released. Irreversible in nature

C(s) + O_{2}(g)\rightarrow  CO_{2}(g)

(b) ice melting: It is a physical change because ice the solid phase of water melts to get converted to the liquid phase of water only and no change in the chemical composition is seen.

H_{2}O(s) \overset{\Delta }{\rightarrow} H_{2}O(l)

(c) mixing chocolate syrup with milk : It is a physical change because on dissolving chocolate syrup in milk, only the color of the milk changes, therefore there is change in the property. As, it involves mixing of two miscible liquids and does not involve any change in the chemical composition of either of the two liquids.

(d) explosion of a firecracker: it is a chemical process, as it involves combustion of an explosive material to produce carbon dioxide, carbon monoxide and water vapour. It is a chemical change because it involves change in the chemical composition. Irreversible in nature

(e) magnetizing of a screwdriver: It is physical change because on magnetization only the magnetic property of the screwdriver changes AND there is no change in the chemical composition of the matter.

6 0
3 years ago
What are the types of chemical equations ?
harkovskaia [24]

Answer:

combination

Decomposition

single displacement

double displacement

combustion

Redox    

Explanation:

7 0
3 years ago
A student assisting with the experiment would observe all of the following about the electron transport chain EXCEPT:A. Electron
zheka24 [161]

Answer:

C. All electron carriers are mobile and hydrophobic

Explanation:

Hello,

In this case, it is widely known that the electron carriers move inside the inner mitochondrial membrane and consequently move electrons from one to another. In such a way, they are mobile, therefore they are largely hydrophobic as long as they are inside the membrane.

For instance, the cytochrome c is a water-soluble protein in a large range, therefore, the answer is: C. All electron carriers are mobile and hydrophobic.

Best regards.

5 0
3 years ago
Which flower parts make up a pistil?
liberstina [14]

Answer:

B

Explanation

English - Hey, so I'm starting a little business. I'm going to be customizing shoes. If you want a pair of shoes please tell me. I will be putting another post with photos of shoes I've customized.

Spanish - Oye, estoy comenzando un pequeño negocio. Voy a personalizar zapatos. Si quieres un par de zapatos, dímelo. Estaré poniendo otra publicación con fotos de zapatos que he personalizado.

Insta account and website in progess

4 0
3 years ago
Don’t mind my cats fur :)
denpristay [2]

Answer:

Potassium is an element, with the symbol K

Explanation:

An element is something that cannot be broken down any further, for example, calcium, its Ca.

A compound is when you bond two or more elements. Compounds can be broken down into its original elements, for example, H₂O, it contains two atoms of hydrogen and one atom of oxygen (both hydrogen and oxygen are elements).

8 0
3 years ago
Other questions:
  • How are the elements arranged in the modern periodic table g?
    14·1 answer
  • Choose the glycolytic enzymes that require ATP
    8·1 answer
  • In a problem, you are given two pressures and one temperature at constant volume and amount of gas. You are asked to find a seco
    15·2 answers
  • A jeweler has five rings, each weighing g, made of an alloy of silver and gold. She decides to melt down the rings and add enoug
    10·1 answer
  • Teams of scientists work together to explore space. Which achievement did not involve chemists?
    9·1 answer
  • 10. Give the number of protons, electrons, and neutrons in strontium-88.
    8·1 answer
  • Please help with this , it’s very important
    12·1 answer
  • Consider the balanced chemical reaction below. What is the maximum number of
    11·1 answer
  • In an atom the number of protons must be equal of
    14·2 answers
  • Which electron is, on average, close to the nucleus: an electron in a 2s orbital or an electron in a 3s orbital?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!