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
Aloiza [94]
2 years ago
14

Which statement best describes a physical change?

Chemistry
1 answer:
natta225 [31]2 years ago
4 0

Explanation:

A physical change is one which can be reversed.it also does not produce any new substance.

changes in state such as the melting of a solid, the freezing and vaporization of a liquid as well as changes In shape are examples of physical changes

You might be interested in
How do you write 400000 in scientific notation?
Andrej [43]

Answer:

4 x 10 5

Explanation:

6 0
3 years ago
Read 2 more answers
Put these different types of radiation in order from MOST to LEAST penetrating.
Naily [24]

Answer:

C. Gamma > beta > alpha

Explanation:

<u>Alpha rays</u> : These are positively charged  and have mass 4u. These contain high energy Helium nucleus with 2 proton and 2 neutron.

These are heavier and maximum charged than beta and gamma particles.They have low velocity,least penetration power (can't travel more than 10-18 cm).

<u>Beta rays</u> : They are negatively charged and have negligible mass.

On emmission of beta particle, neutron is divided into proton and electron. They have less mass and very high velocity, so their penetrating power is more than alpha particles.

<u>Gamma rays</u>: These are parts of electromagnetic spectrum and travel with the speed of light (maximum velocity).Gamma rays do not have mass have maximum penetrating power.

4 0
3 years ago
According to the Brönsted-Lowry theory, an acid is ___
Zigmanuir [339]

Answer:

is a substance which donates an H^+ or a proton

8 0
2 years ago
Read 2 more answers
Pls help ty so much!
Nitella [24]

\quad \huge \quad \quad \boxed{ \tt \:Answer }

\qquad \tt \rightarrow \:mass = 11.42 \:\: grams

____________________________________

\large \tt Solution  \: :

\qquad \tt \rightarrow \: Q = ms\Delta T

  • \textsf{Q = heat evolved/absorbed = 501 J}

  • \textsf{m = mass in gram = ?}

  • \textsf{s = specific heat = 0.45}

  • \textsf{ΔT = change in temp = 120 - 22.5 =97.5°C}

\large\textsf{Find m : }

\qquad \tt \rightarrow \: 501 = m \sdot(0.45) \sdot(97.5)

\qquad \tt \rightarrow \:  501 = m \sdot43.875

\qquad \tt \rightarrow \: m =  \dfrac{501}{43.875}

\qquad \tt \rightarrow \: m  \approx11.42 \:  \: g

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

4 0
2 years ago
Which best describes the purpose of this blog post?
Yakvenalex [24]

Answer:

its the first option

Explanation:

6 0
4 years ago
Other questions:
  • If you have a electromagnet how many it’s magnetic field stronger
    12·1 answer
  • Write the nuclear equation for the alpha decay of:
    10·1 answer
  • Which are the reactants in this chemical reaction?
    12·2 answers
  • Where can i buy gallium? Please dont say eBay or Amazon
    10·1 answer
  • What mass of oxygen is required to produce 8.0g of magnesium oxide from 4.8g if magnesium
    14·2 answers
  • Which statement describes a chemical property of iodine?
    11·1 answer
  • Calculate the mass percent of titanium in the mineral ilmenite, FeTiO3. What mass of ilmenite (in grams) is required if you wish
    9·1 answer
  • 2 examples of when scientists used space probe technology to find out more about comets.
    11·1 answer
  • Plants and animals need to protect themselves to survive. Select the statement that best describes the adaptions of animals and
    13·1 answer
  • Which of the following gas samples would have the largest volume, if all samples are at the same temperature and pressure?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!