Can y'all give me some examples of physical changes

Answers

Answer 1
Answer: Something that melts, something that changes shapes (for instance, play dough being squished), something that boils, something being mixed or dissolved (but only if it doesn't chemically react), etc. A physical change is a change of state of matter. 

Related Questions

If an orange is orange, why isn't a lime called a green or a lemon called a yellow?
How many moles are in 213 grams of NaCl?
Which of these was most important in forming the solar system A-darkness B-evaporationC-coolingD-gravity
Describe the process of sublimation in terms of heatenergy, relating what happens to the behavior of matter.Answer in complete sentences.
How do atoms form a new substance?(a) by gaining electrons from each other (b) by sharing electrons with each other (c) by losing neutrons to each other (d) by losing electrons

A nickel is about 2 millimeters thick, or 2/1,000 of a meter how many nanometers is this

Answers

This is a unit conversion problem. Nm (nanometer) is smaller than mm (millimeter).

1 mm = 1/10³m = 1 x 10⁻³ m

1 nm = 1/10⁹ m = 1 x10⁻⁹ m

1 m = 1 x 10nm

 

Hence, 2 mm = 2 x 10⁻³ m

Then we can convert 2 x 10⁻³ m to nm by multiplying with 10.

Then 2 mm = 2 x 10⁻³ m = 2 x 10⁻³ x 10⁹ nm = 2 x 10⁶ nm.

Hence, the thickness of nickel is 2 x 10 nm.

How is gamma radiation different from other types of electromagnetic radiation? It has higher energy and higher frequency. It has higher energy and lower frequency. It has lower energy and higher frequency. It has lower energy and lower frequency.

Answers

Answer:

Is the type of radiation with a higher frequency and energy.

Explanation:

Into the electromagnetic spectrum, there are several kind of radiation, the gamma one has the highest energy and frequency, because both characteristics  are connected in a direct form.

Gamma radiation has higher energy and higher frequency among the different types of electromagnetic radiations.

Explanation:

The quantity of energy present in the photons determines the electromagnetic radiation type. Radio waves have low energy photons, while microwave photons have a bit more energy than the radio waves, infrared rays have more photons than the micro and radio waves, then followed by visible, ultraviolet, X-rays, and, the gamma-rays which is highly energetic among all.

A short wavelength means a high frequency, whereas, a long wavelength means a low frequency. In electromagnetic spectrum, the wavelength of gamma rays is shorter than all other electromagnetic rays. Hence, it has the high frequency.

Which type of fire is sometimes set as a way to protect a forest?

Answers

Answer;

Surface fire

Explanation;

  • Surface fires are type of forest fires that may burn primarily as a surface fire, spreading along the ground as the surface litter and undergrowth on the forest floor and is engulfed by the spreading flames.
  • They are the easiest fires to put out and cause the least damage to the forest. Surface fires create the least amount of destruction.
  • These fires protects the forest by releasing the nutrients that would otherwise decompose slowly, having little benefit to the ecosystem.
  • Additionally, these fires allow more open spaces for new and different kinds of vegetation to grow and receive sunlight.

What is the most important question to ask to determine whether a change is physical or chemical

Answers

The best question is WHAT and HOW

What are examples of physical properties of a compounds?

Answers

Examples of physical properties are: color, smell, freezing point, boiling point, melting point, infra-red spectrum, attraction (paramagnetic) or repulsion (diamagnetic) to magnets, opacity, viscosity and density.

Which element melts at room temperature?

Answers

Bromine and Mercury melt at room temperature!
Also please answer questions properly, and not be rude.
Bromine and Mercury are the elements that melt at room tempature. Hope this helped!