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
Nastasia [14]
3 years ago
14

Ice melts to form water. And water freezes to form ice. Choose the TRUE statement about these changes.

Chemistry
2 answers:
Dmitrij [34]3 years ago
4 0

Answer:

A. Both freezing and melting are physical changes.

Explanation:

Even if you were to freeze water, the molecules are still water molecules, and vise versa with melting it.

vovikov84 [41]3 years ago
3 0

Answer: Option A) Both melting and freezing are physical changes.

Explanation:

A physical change is one which is easily reversible and in which no new substances are formed.

Hence, since ice melts to form water (melting), and water freezes to form ice back (freezing), both melting and freezing are easily reversible and do not form new products.

Thus, both melting and freezing are physical changes.

You might be interested in
In the reaction
NemiM [27]

Answer:

3 moles of CO are needed

Explanation:

Given data:

Number of moles of CO used = ?

Mass of Fe produced = 112 g

Solution:

Chemical equation:

Fe₂O₃ + 3CO      →        2Fe + 3CO₂

Number of moles of Fe:

Number of moles = mass/ molar mass

Number of moles = 112 g/ 55.85 g/mol

Number of moles = 2.00 mol

Now we will compare the moles of iron and CO.

                   Fe        :         CO

                   2          :         3

Thus, 3 moles of CO are needed.

6 0
2 years ago
What did GEM Anscombe stand for give a brief description?
KATRIN_1 [288]

Answer:

Explanation:

Anscombe is a philosopher who has approached contemporary themes, today enormously current, precisely in the ethical and social field, stimulating the development of virtue ethics as an alternative to utilitarianism, Kantian ethics and social contract theories. Anscombe argues that what we understand as a moral obligation, what we "must" do, is an obligation to God.

6 0
3 years ago
Which reaction should be used to convert propene into an alkyl halide?
skelet666 [1.2K]
Substitution that is it 
4 0
3 years ago
Read 2 more answers
When is a roman numeral most likely needed in the name of an ionic compound?
Sauron [17]
The answer is I’m guessing c
5 0
3 years ago
Read 2 more answers
Need help with this question.... Next to each Formula, write the number of atoms of each element found in one unit of the compou
Andrew [12]

Answer:

The number of atoms present in one unit of the following compounds is:

a). Potassium Iodide , KI = 2

b).Sodium Sulfide, Na_{2}S = 3

c). Silicon Dioxide , SiO_{2} = 3

d). Carbonic Acid ,H_{2}CO_{3} = 6

Explanation:

Atomicity : It is defined as the number of atoms that are present in a given molecule/compound.

Atom : The smallest unit of matter is called atom. For e.g O is atom of oxygen but O_{2} is not an atom , it is molecule of oxygen .

O_{2} molecule has 2 atoms of Oxygen

Similarly  Na , K , Fe are atoms but O_{2} ,CO_{2} ,N_{2},H_{2}  are molecules

a).Potassium Iodide

KI = 1 atom of K + 1 atom of I

Total atoms = 2

b) Sodium Sulfide

Na_{2}S = 2 atoms of Na + 1 atom of S

Total atoms = 3

c) Silicon Dioxide

SiO_{2} = 1 atom of Si + 2 atoms of O

Total atoms = 3

d) Carbonic Acid

H_{2}CO_{3} = 2 atom of H + 1 atom of C + 3 atom of O

= 2+1+3

Total atoms = 6

7 0
2 years ago
Other questions:
  • Question 3 (0.1 points)
    6·1 answer
  • The chief function of muscles is _____.<br> contraction<br> absorption<br> excretion<br> protection
    15·2 answers
  • Why are some elements more reactive than others?
    12·2 answers
  • Pls help! I’m not very smart so please explain it to me!
    9·2 answers
  • How many grams of sodium chromate, Na2CrO4, are needed to react completely with
    15·1 answer
  • An apple in a tree has a gravitational store of 8J. As it falls, it accelerates constantly until it hits the ground. What is the
    12·1 answer
  • Explain why children should not be forced to choose sides in a divorce situation, provide two responses
    5·1 answer
  • Use the balanced chemical equation below to answer the following.
    8·1 answer
  • What type of volume is solid
    12·1 answer
  • HDSJDHAJ SOMEONE HELP ME IM ABOUT TO FAIL MY SCIENCE CLASS
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!