Examples of physical change include?

A. Melting
B. Boiling
C. Freezing
D. All of these are examples of physical change

Answers

Answer 1

Answer:

All of these examples are physical changes.

Explanation:

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition.


Related Questions

Question 1
Why can't wee see atoms?

Answers

Answer:

They're too small

Explanation:

Atoms are smaller than the wavelength of visible light

Answer:

too small

Explanation:

A scientist thinks that ducks swim faster when they are in cold water. He tests two groups of ducks, one in cold water and one in room temperature water. He records how fast they swim.

Experimental Group:


Control Group:

Answers

Experimental group is the ducks in cold water
And the control group is the ducks in room temperature water


Which of the following neutral atom configurations satisfies the octet rule?
1s2 2s2 2p6 3s2 3p6
1s2 2s1
1s2 2s2 3s2 3p4
1s2 2s2 3s2 3p6 4s1

Answers

Answer:

2

Explanation:i did the test

How many days does the waxing and waning phase of the moon last on average? *

Answers

Answer:

7.38 days.

Explanation:

If you put 8 protons and 8 neutrons, which element did you make?

oxygen
sulfur
berllium
gadolinium

Answers

u make the element oxygen

what is the electron configuration for gallium

Answers

Answer:

[Ar] 3d^104s^24p^1

[AR] 3d10 4s2 4p1 is the configuration

Convert 49 lbs into grams

Answers

Answer:22226.026 gExplanation:

To get an approximate result, multiply the mass value by 454.

hope this help!

If a can of soup 150 g mass and 0.75g/ cm^3 density what’s the volume

Answers

Answer:

The answer is 200 cm³

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density}\\[/tex]

From the question

mass = 150 g

density = 0.75 g/cm³

We have

[tex]volume = \frac{150}{0.75} \\ [/tex]

We have the final answer as

200 cm³

Hope this helps you

The element found in Group 13, Period 2 is ______ a- Al b- Be c- B d- Mg

Answers

c- B which is Boron...

A plant's growth response to water is called _____.

hydrotropism
geotropism
gravitropism
thigmotropism

Answers

Answer:

A or Hydrotropism

Explanation:

Answer:

hydrotropism Explanation:

because hydro= water and topism= the turning part of an organism hope this helps!! <3

HELP ME PLEASE!!
HELP!!!
Opportunity cost refers to:
A. the price of a good set by supply and demand in a market.
B. the inability of an economy to address all people's needs.
C. the lost chance to make one choice when another is made.
D. the economic motivation for a business to produce a good or
service.
SUBMIT

Answers

Answer:

C

Explanation:

How many grams are in 1.98 x 1024 formula units of NaCl?

Answers

Answer:

There are 2027.52 formula units of NaCl

Explanation:

plz mark me brainlest

Do you think that participation in a Supervised Agriculture Experience (SAE) prepares a student for a career in the AFN industry? Discuss why you agree or why you don’t. Discuss how your particular SAE has prepared you for your future career.



HELPPPP !! For horticulture

Answers

Answer:

The SAE curriculum includes practical farming tasks conducted outside the scheduled classroom and laboratory period by students. SAEs offer a method for students in agricultural education to gain real-world work opportunities that they are most interested in in the field of agriculture. Supervised agricultural experience is an essential component of agricultural education, and all Agriculture, Food and Natural Resources (AFNR) courses are a necessary component.

Explanation: Hope it helps

Which of the models best represents CaCO3?

Answers

Answer: B

Explanation:

To solve this we must be knowing each and every concept related to CaCO[tex]_3[/tex]. Therefore,  the correct option is option B among all the given options.

What is CaCO[tex]_3[/tex]?

Carbonate of calcium One of the best-known compounds is CaCO[tex]_3[/tex]. Calcium carbonate is indeed a non-toxic, odorless substance. CaCO[tex]_3[/tex] is a white mineral found naturally in chalks, limestones, and marbles. It is a common material found in rocks as calcite and aragonite.

CaCO[tex]_3[/tex] is most commonly found in limestone. It is a sedimentary rock composed primarily of calcite and is the primary component of eggshells, snail shells, seashells, and pearls. Calcium carbonate is also used in medicine as a source of calcium or as an antacid. Although excessive calcium carbonate ingestion is dangerous and causes poor digestion.

Therefore,  the correct option is option B.

To know more about  CaCO[tex]_3[/tex], here:

https://brainly.com/question/28455207

#SPJ2

Which statement best explains how the passage fits
the realistic fiction genre?​

Answers

Answer:

It seems believable and familiar.

Explanation:

Plz mark Brainlest

Which classification best describes oxygen gas? a element b compound c solution d heterogeneous mixture

Answers

Answer:

oxygen is an element because it is a pure substance which cannot be split into simpler substances by chemical means

What does the speed of the mixing colors tell you about the speed of the
molecules in hot and cold water?

Answers

Since the colors moved faster in the hit water, it means that the water molecules in the hot water move faster than the molecules in the cold water.

An element that is in the same period as nitrogen is _________

Group of answer choices

helium

neon

argon

sodium

Answers

Neon is in the same period

Answer:

Neon

Explanation:

Chemical element Chemical series Electron configuration

3 . Li -Lithium Alkali metal [He] 2s1

4 . Be-Beryllium Alkaline earth metal [He] 2s2

5. B -Boron Metalloid [He] 2s2 2p1

6. C-Carbon Reactive nonmetal [He] 2s2 2p2

7 . N -Nitrogen Reactive nonmetal [He] 2s2 2p3

8. O-Oxygen Reactive nonmetal [He] 2s2 2p4

9. F -Fluorine Reactive nonmetal [He] 2s2 2p5

10. Ne-Neon Noble gas [He] 2s2 2p6

Which orbital indicated on the periodic table???

S
P
D
F



Help ASAP I’ll mark as brainlister:)

Answers

I think it’s S umm let me know if I’m wrong but I’m. 80 precent sure it’s S

A. Lithium and cadmium are in the mixture. Strontium is not in the mixture.B. Lithium and strontium are in the mixture. Cadmium is not in the mixture.C. Cadmium and strontium are in the mixture. Lithium is not in the mixture.D. All of the shown elements are present in the mixture.

Answers

Answer:

I think it's Sr and Li...

Explanation:

You just line up the elements to the mixture and whatever fits with all of the charts are the elements present in the mixture.

Mr. Bullis wants to know if he gives teachers candy, it will make them smile more. He gives half the teachers candy and the other half get nothing. He then records the number of times the teachers smiled.

Experimental Group:

Control Group:

Answers

Answer:

the experimental group would be the teachers who recieved the candy

control group would be the teachers who dont get any candy

Explanation:

experimental group is the group that receives the test variable being tested in this case the variable being the candy

and the control group is the group who doesn't receive the variable

purpose of having a control is to rule out other factors which may influence the results of an experiment.

The mass of an atom Is found by adding Its protons and .The electric charge of an atom Is found by adding the charges carried by Its protons and .​

Answers

Answer: the 1st answer is neutrons and i think the 2nd is nucleus

Explanation:

The mass of an atom is found by adding its protons and neutrons. The electric charge of an atom is found by adding the charges of its protons and electrons.

What is atomic mass?

The atomic mass of an element is the total number of protons and the number of neutrons carried by one atom of that element. The atomic mass of an element is usually expressed in grams or a.m.u.

The atomic mass of an element = No. of protons + No. of neutrons

or

The atomic mass of an element = No. of electrons + No. of neutrons

The atomic number gives us information about how many protons are inside the nucleus of the atom. Elements are recognized by the number of protons in the nucleus. Neutrons are uncharged elementary or subatomic particles that are stable when bound in an atomic nucleus.

As the electrons and protons are charged particles in an atom, therefore, the sum of the charge carried by them is equal to the electrical charge of the atom.

For a neutral atom, the number of protons present in an atom is always equal to the number of electrons.

Learn more about atomic mass, here:

brainly.com/question/17067547

#SPJ5

can you guys help me please? I dont get what im supposed to do here.

Answers

Oh thats ez its 1M is 1M is 1M is 1M is 1 M


Convert the following to Celsius
16) 100°K
17) 200°K
18) 273°K
19) 350°K

Answers

Answer:

16) -173.15cel

17)-73.15cel

18)-0.15

19)76.85

Explanation:

I converted kelvins to cel

Brainly pls

The distance of the Kentucky Derby, a classic horse race, is 1.25 miles. How is this distance expressed in furlongs ?

Answers

So to convert from miles to furlongs you need to multiply by 8 so you do
1.25 x 8
Which is 10 furlongs

Which is a characteristic of nuclear fission? releases nonradioactive waste only involves the collision of two nuclei releases small amounts of energy compared to fossil fuels involves the splitting of an atom into two or more fragments

Answers

Answer:

involves the splitting of an atom into two or more fragments

Explanation:

The characteristic of nuclear fission is that it involves the splitting of an atom into two or more fragments. Details about nuclear fission can be found below.

What is nuclear fission?

Nuclear fission in radioactivity is a process by which the nucleus of a large atom splits into two or more smaller atoms.

Nuclear fission is usually accompanied by the release of a radioactive particle.

This suggests that the characteristic of nuclear fission is that it involves the splitting of an atom into two or more fragments.

Learn more about nuclear fission at: https://brainly.com/question/913303

#SPJ2

name two units for density? I need help!!!!

Answers

Answer:

Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth ’s density is 5.51 grams per cubic centimetre. Density can also be expressed as kilograms per cubic metre (in MKS or SI units). For example, the density of air is 1.2 kilograms per cubic metre.

Explanation:

A 2.3 kg object has 15 ) of kinetic energy. Calculate its speed.
O A. 0.12 m/s
OB. 1.1 m/s
O c. 2.4 m/s
OD. 3.6 m/s

Answers

Answer:

The answer is option D

Explanation:

To find the speed given the kinetic energy and mass we use the formula

[tex]v = \sqrt{ \frac{2KE}{m} } \\ [/tex]

where

m is the mass

v is the speed

From the question

KE = 15 J

m = 2.3 kg

We have

[tex]v = \sqrt{ \frac{2 \times 15}{2.3} } = \sqrt{ \frac{30}{2.3} } \\ = 3.61157559...[/tex]

We have the final answer as

3.6 m/s

Hope this helps you

Plz help!

Which elements form covalent bonds? Which other element is included in the group?

Answers

covalent bonds usually occur between nonmetals. For example, in water (H2O) each hydrogen (H) and oxygen (O) share a pair of electrons to make a molecule of two hydrogen atoms single bonded to a single oxygen atom. In general, ionic bonds occur between elements that are far apart on the periodic table.

What mass of water freezes if 5.43 kJ oh heat are released in the process

Answers

Q= mass•specific heat•change temp. 5.43=m•4.184•(202-32) M=7.63grams

Answer:

16.3 g

Explanation:

got it right on ck

Other Questions
6x - 2 3x + 7 18. Identify the segment bisector of RS. Then find RS. (Section 1.3) M R S Which paragraph from Passage 1 contains information that supports the argument against the placement of advertisements on school buses? Select one.Paragraph 2Paragraph 8Paragraph 13Paragraph 17 16. Mrs. Hunneycutt makes dog sweaters. Her profit each month is a function of theprice she charges for each sweater. Her total profits, y (in hundreds of dollars), basedon the sales price, x, can be modeled by the function y=-3x2 + 39x - 108.Identify any zeros of the function, and interpret what the zeros mean in terms of thesituation Find the next three terms of an arithmetic sequence 58 , 63 , 68 , 73 . find the next three terms and show all your work how did u get it and the formula and ty What kind of investigation are best for demonstrating cause and effect State your claim on ONE way you think your generation can change the way other young people are taught to view race and be tolerant of others. How did the Atlantic slave trade impact the Americas role in triangular trade?A. It increased the number of enslaved laborers forced to grow crops that were exported from the Americas to Europe. Solve: -3 - (-5) + (-2) In a short essay response of at least seventy-five words, explain what it means to analyze a piece of fiction. Your answer should include specific examples of how to go about forming an analysis.i dont understand what was the main purpose for separation of powers? A car traveling east in a straight line on a highway decreases its speed from 30. meters per second to 23. meters per second in 2.0 seconds. What is the magnitude of the car's average acceleration to the nearest tenths place, during this time interval? Can yal helpppppppppppppppppppppppp A certain even integer is 32 less than twice the next even integer. Find the integer.I know the answer is 28 but I do not know how to get to that answer. I could use help ASAP. How does the nucleus control cellular activity? use the words in sentences in your own word. Glean:Oblivious:Foraging:Garner:Dignity:Can you plz help me those words in a sentence? IF DONT KNOW PLZ DONT ANSWER THANK YOU SO MUCH 18/7 divided by 6/9 and how to get there Adjust point D so the measure of angle BAD is equal to the measure of angle CAD. Which statements are true? Check all that apply.AD bisects BAC. AD bisects BC.AD forms right angles with BC.AD is perpendicular to BC.AD is the perpendicular bisector of BC. How do you convert in the metric system? HELP HOW DO I REWRITE IT?1 5 = 4a -7 please help me