2. Match each diagram with its correct description. Diagrams will be used once.
.
O
A
B
с
D
E
Pure Element - only one type of atom present.
Mixture of two elements – two types of uncombined atoms present.
Pure compound - only one type of compound present.
Mixture of two compounds - two types of compounds present.
Mixture of a compound and an element.
Answers
Answer:
1.C
2.E
3.B
4.A
5.D
Explanation:
C- Pure element - one type of atom present
E- Mixture of two elements - two types of uncombined atoms present
B- Pure compound - only one type of compound present
A - Mixture of two compounds - two types of compounds present
D- Mixture of a compound and an element
The images represent;
Pure elementMixture of two elementsPure compoundMixture of two compoundsMixture of a compoundIn image C, there is only one kind of uncombined representation, this corresponds to a pure element
Image E has two uncombined representations which corresponds to a mixture of two elements
Image B consists of only one type of combined representation. This corresponds to a pure compound.
Image A shows two kinds of combined representations. This corresponds to a mixture of two compounds.
Image D consists of some combined representations and some uncombined representations. This corresponds to a mixture of a compound and an element.
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Related Questions
12. Which of these elements would most likely be a shiny, gray-colored
solid at room temperature, conduct electricity, and dent when hit with a
hammer? *
Answers
Answer:
Metal.
Explanation:
If there are more specific options choose the one that is classified as a metal on the periodic table :)
The grey-colored shiny element that conducts electricity has been Aluminum metal.
The periodic table has been consisted of metals, metalloids, and nonmetals.
The metals have the properties of conducting electricity, as well as they are the shiny compound that existed to be solid at room temperature. The metals have been lustrous and ductile and malleable.
Thus. metals have been the compound that has been dented with the hammer, conducts electricity, and is shiny. The grey-colored metal has been Aluminum.
Thus, the grey-colored shiny element that conducts electricity has been Aluminum metal.
For more information about the elements, refer to the link:
https://brainly.com/question/18129377
What is the atomic number of an atom?
a.) the number of neutrons
b.) the number protons and neutrons
c.) the number of protons
d.) the number of electrons and neutrons
Answers
Answer:
the number of protons
Explanation:
i took the the test
Round the following numbers to 3 significant figures.
13.
8,448
14. 89.32
15.
0.05678
Answers
Explanation:
13. 8,448 = 8,450 (round up, 8 more than 5)
14. 89.32 = 89.3 (round down, 2 less than 5, 0 is not needed)
15. 0.05678 = 0.0568 (round up, 8 more than 5, 0 in front are not significant)
What is carbon acid a mixture of and how many parts is it
Answers
Answer:
4 parts of acid
Explanation:
Review scientists and their contributions to atomic theory by filling in the table
below.
Answers
Answer:
DALTON: (Experiment : Atomic Theory of matter)(Paticle discovered: Atom) (Model of atom: BILLIARD BALL)
THOMSON: ( Experiment : Cathode ray) (Particle discovered : Electron) (Model of atom : PLUM PUDDING MODEL)
RUTHERFORD: (Experiment: Gold Foil experiment) ( Particle discovered: Nucleus & Protons) ( Model of Atom: RUTHERFORD MODEL)
BOHR: ( Experiment : Atomic structure) ( particle discovered : electrons travel in separate orbits around the nucleus and that the number of electrons in the outer orbit determines the properties of an element) (Model of atom: BOHR MODEL)
CHADWICK: (Experiment : "proton-electron pair")
(particle discovered: Neutrons) ( Model: QUANTUM MECHANICAL MODEL)
Which of the following pairs will form an ionic bond?
o and o
Sr ans Se
N and F
As and Br
Ar and P
Answers
Answer:
o and o
Explanation:
please mark as brainlist answer
Convert 0.822 decigrams (Dg) to Milligrams (Mg)
Answers
it is 82.2
Explanation:
i just know
Scientific theories are always?
Answers
Calculate the volume of a cube
having sides 3.0 cm in length.
[ ? ]ıcm3
Answers
Answer: 27
Explanation: multiply 3.0 3 times
What is the density of a 40g object that has a volume of 2ml
Answers
Answer:
What is the density of a 40g object that has a volume of 2ml
Explanation:
20 g/mL
volumemassdensityThe density of a 40g object that has a volume of 2ml is 20g/ml. Details about density can be found below.
How to calculate density?The density of a substance refers to the measure of the mass of matter contained by a unit volume.
The density of a substance is calculated by dividing the mass of the substance by its volume.
According to this question, a 40g object has a volume of 2ml. The density is calculated as follows:
Density = 40g ÷ 2mL
Density = 20g/mL.
Therefore, the density of a 40g object that has a volume of 2ml is 20g/mL.
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How many different crystalline structures exist?
A.4
B.6
C.8
D.12
Answers
hope this helps
is adding tomato sauce to pasta a chemical or physical change
Answers
Answer:
the answer is physical change
Answer: A chemical reaction is taking place here as well.
Elements, Compounds and Mixtures
1. Classify each of the following as elements (E), compounds (C) or Mixtures (M). Write
the letter X if it is none of these.
Diamond
(C)
Water (H20)
Dry Ice (CO2)
Sugar (CsH1206)
Alcohol (CH3OH)
Baking Soda (NaHCO3)
Milk
Pail of Garbage
Titanium (TI)
Air
Ammonia (NH3)
Iron (Fe)
Sulfuric Acid (H2SO4)
Salt (NaCl)
Popcorn
Gasoline
Energy
Gold (Au)
Krypton (Kr)
Wood
Electricity
Bismuth (Bi)
Bronze
A dog
Uranium (0)
Ink
Concrete
Answers
Answer:
Explanation:
Electricity is the flow of electrically charged particles, not a form of matter.
The following as elements (E), compounds (C) or Mixtures (M).
Diamond - E, Sugar- C, Milk - M, Iron- E, Air- M, Sulfuric Acid- C, Gasoline - M, Electricity- X, Krypton- E, Bismuth - E, Uranium - E, Kool-Aid -M,
What is an element?An element is the smallest part of a substance that is capable of independent existence. An element cannot be broken down into any other substance. Krypton, Bismuth etc are all elements.
A compound is defined a combination of two or more elements which are chemically combined together e.g NH3, CO2 etc.
A mixture is defined as any combination of substances that are not chemically combined together. E.g Pizza, milk etc
The following as elements (E), compounds (C) or Mixtures (M).
Diamond - E
Sugar- C
Milk - M
Iron- E
Air- M
Sulfuric Acid- C
Gasoline - M
Electricity- X
Krypton- E
Bismuth - E
Uranium - E
Kool-Aid -M
Water - C
Alcohol - C
Pail of Garbage - M
Ammonia - C
Salt - C
Energy - X
Gold - E
Wood - M
Bronze - M
Ink - M
Pizza - M
Dry Ice - C
Baking Soda - C
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2.1.695 x 104 - 1.395 x 1015 =
Answers
is density a chemical or physical property of a substance?
Answers
Answer:
A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.
I hope this helps you understand! <3
Once formed, how are coordinate covalent bonds different from other covalent bonds?
A) There is no difference
B) They are more ionic in character
C) they are stronger
D) they are weaker
Answers
There is no difference.
RES
Which of these data come from reliable sources? Check all that apply
the scientific name of an organism listed in an encyclopedia
O a list of medical statistics written in a magazine advertisement
solar activity data reported by NASA on its website
the behavior of a species described in a science fiction novel
the behavior of a species described in a professional journal
Answers
Answer: A, C, E
Explanation:
Got it right
Answer:
A, C, E
Explanation:
Thank the guy above me <3
A dog pushes a ball 0.25 kg with a net force of 4 N. What is the acceleration?
Answers
Answer:
16kg/s
Explanation:
The formula for acceleration is [ a = f/m ] where f = force and m = mass
a = 4/0.25
a = 16
Best of Luck!
how can you maximize the use of useful materials that you have identified?
Answers
Answer: The question is not complete, here is the complete question...
How can you maximize the use of useful materials that you have identified? empty bottles, fruits peeling,old news paper
The way to maximize the use of materials identified is by identifying the 3 R's of waste management which are Reduce, Recycle and reuse .
Explanation:
For example, when we check through the materialsempty bottles, fruits peeling,old news paper them can be Reduce, Recycle and reuse.
The plastic bottles can be recycled i.e converting the waste plastic materials into another useful materials like fabric, shoes, mats.
Fruits peeling can be reuse as composts for plants. These can be allow to be decompose which serve as plant compost to release nutrients for plants growth.
Old newspapers can be reduced by been sold to junks shop and some cash can be earned from it.
You can maximize the useful materials that are being identified by recycling, reusing, and reducing them.
Let assume that the unknown materials in question are:
empty bottles, fruit peel, and old papersThe materials in question are called waste materials but they should not be discarded since they have many other purposes.
Recycling is an act or a process of changing waste materials into reusable products. For example, empty bottles can be recycled to produce varieties of products such as birdfeeders, pencil cases, T-shirts, etc.
Fruit peel can be reused on farmlands as compost manure. They can be used to increase the fertility of farm crops.
To reduce a material means to bring smaller in size. Old papers can be reduced in making paper mache arts. This can add creativity and beauty to the world of art.
In conclusion, you can maximize the useful materials that are being identified by recycling, reusing, and reducing them.
Learn more about waste materials here:
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Sedimentary rock is usually a. light colored and high density c. dark colored and high density b. light colored and low density d. dark colored and low density
Answers
Answer:a for sure
Explanation:
Answer:
B. light-colored and low density
Explanation: edge 2021
Scientists' belief that an atom is a solid sphere, is good enough to explain; PLZ I HAVE LESS TIME!!!!
Answers
Answer:
Its quite vague, instead you could say an atom is the smallest building block which further consists of subatomic particles like protons, neutrons and electrons :)
Hope thi helps :) and I'd appreciate if you'd mark brainliest because ive been stuck on the same rank for quite a long time :(
Your next-door neighbor has a little girl who is 3 ft, 5 inches tall. What is the little girl’s height measured in inches? in decimeters?
Answers
Answer:
41 inches
Explanation:
There is 12 inches in 1 foot so times 12 and 3. Thats 36 so now do 36 + 5 that =41.
Elements in the same family have similar properties because the have the same number of elecrtons in the __________ energy level.
Answers
Answer:
I believe it is the valence energy level.
PLEASE HELP ASAP!
how are chemical and nuclear reactions different from one another?
Answers
2. A rock occupies a volume of 20 cm and has a mass of 54 grams. Find the density of
this rock.
Answers
A graduated cylinder approximate as a regular cylinder has a radius of 1.045 CM and a height of 30.4 ATM what is the volume of the cylinder in CM to the power of three use 3.1414 round to the nearest 10th
Answers
Answer:104.6cm^3
Explanation:
V of a cylinder =πr2h
V = pi((1.045cm)^2)(30.48)
V = 104.57cm^3
Explanation:
Answer:
104.6
Explanation:
Oxygen with a -2 charge has...
A) gained 2 protons
B)gained 2 electrons
C)Lost 2 electrons
D)Lost 2 protons
Answers
Answer:
B. Gained 2 electrons
Explanation:
okay another question from my test I’m almost done sorry for spamming I just gave up on that class because I’m pretty sure it can’t get worst :D
Answers
Answer:
The Answer is C.
Explanation:
The Mass number is the total number of nuetrons and protons in the nuclues. So there are 84 particles in the nuclues because the mass number is 84. Also because the atomic number is 36 that means that there are 36 protons. It also happens to mean that there are 36 electrons because the amount of the protons is equal to electrons unless stated otherwise. Because electrons reside outside of the nuclues there are 36 particles outside the nueclues.
Why does sound travel at different speeds through different materials
Answers
Answer:
Because if there are more space in the material the sound will travel faster
but if there is less space it will travel slower
How can you increase the momentum of an object?
A. By decreasing its velocity
B. By increasing its mass
C. By increasing its friction
S. By decreasing its acceleration
