PLEASE HELP ITS DUE TODAY
Which two statements below
are true? You can only pick two.
A mixture is made of substances that
can be easily physically separated from
each other.
The elements that make up a compound
are chemicaly bonded to each other and
therefore are NOT easily separated from
each other.
Both compounds and mixtures are easily
separated from each other because they
are elements or substances that are
only in physical contact with each other;
they are not chemically connected.
In a compound and a mixture, changing
the ratio of atoms or substances will
chemically change the compound and
mixture.
Answers
Answer:
2nd one and last one
Explanation:
im just that smart
Compounds are formed by chemically combining elements. Mixtures are more physical and can be separated easily
Related Questions
An atom has 8 protons, 9 Neutrons, and 10 electrons. What is the mass number?
Answers
Answer:
17
Explanation:
Mass number = # of protons + # of neutrons
Mass number is calculated using ONLY protons and neutrons. Electrons are not in the count.
Thus, we simply add them together: 8 + 9 = 17
This element is Oxygen - 17.
Which material has a density most similar to the density of water?
( Theres more then one answer)
A) Rubber
B) Wooden ball
C) Ice
D) Egg
E) Granite
F) Titanium
Answers
Answer:
b
Explanation:
Option a, c and d are correct.
The following information should be considered;
Density shows the relationship between the mass and volume. Thr rubber, egg and ice should have the same density that equivalent to the water density. But for the other options, it is not equivalent to each other.learn more: https://brainly.com/question/15959704?referrer=searchResults
Which rocky planets is the most different to Earth's? Why? mark you as brainlist
Answers
Mercury, Venus, and Mars are all rocky planets. None are more or less different than Earth. Earth is the largest and the only planet with extensive regions of liquid water.
Explanation:
Answer:
En nuestro sistema solar, hay cuatro planetas terrestres, que también son los cuatro más cercanos al sol: Mercurio, Venus, Tierra y Marte. Durante la formación del sistema solar, probablemente hubo más planetoides terrestres, pero se fusionaron entre sí o fueron destruidos.
In what ways is a sodium atom different from a sodium ion? *
Answers
A chemical change happens because the particles and chemical bonds that make up the substance get rearranged. true or false
Answers
Answer:
True
Explanation:
In a chemical reaction the hydrogen bonds between the atoms in a substance break up to form a new one.
Hello, please help me if you can :(
Answers
Answer:
4ml
Explanation:
Does Lewis structure show all electrons in an atom?
Answers
Answer:
No. It only shows valence electrons.
Answer:
A Lewis Structure is a very simplified representation of the valence shell electrons in a molecule. It is used to show how the electrons are arranged around individual atoms in a molecule. Electrons are shown as "dots" or for bonding electrons as a line between the two atoms
Around 1910, Rutherford bombarded gold foil with alpha particles. Most of the alpha particles passed straight through. To his surprise, a smaller number were deflected by 180°.
This summary recounts the scientific discovery of
something that absorbs alpha particles.
something that allows alpha particles through.
something that deflects alpha particles.
something that attracts alpha particles.
Answers
Answer:
something that deflects the Alpha particles
How did the composition of elements in the universe change over time?
Please help!
Will mark brainliest! :)
Answers
Answer: According to NASA, after inflation the growth of the universe continued, but at a slower rate. As space expanded, the universe cooled and matter formed. One second after the Big Bang, the universe was filled with neutrons, protons, electrons, anti-electrons, photons and neutrinos.
Explanation:Hopefully this helps!
Could y’all help me name the molecular shapes?
Answers
Explanation:
1) Carbon dioxide
2) methane
3) methanal
4) borane
5) Ozone
6) 1,1,1,1-tetrachloro methane
7) ammonia
8) water
Water is put into a pot and then heated on a stove. It is then removed and allowed to cool to room temperature
Answers
Answer: here you go im pretty sure this is right i studied
Explanation:
sodium benzoate on the periodic table
Answers
Answer:
[tex]na {}^{11} 22.99[/tex]
Explanation:
oof
Which phrase describes a gas?
A fixed shape and volume
B changing shape and volume
C changing shape and fixed volume
D fixed shape and changing volume
Answers
I hope this helps!
Askin cell divides to make a new skin cell. Which component of cell theory does this best illustrate?
O All living things are made of cells.
O Cells are the basic unit of structure and function of all living things.
O All cells come from other cells.
O Cells are generated from nonliving materials.
Answers
Answer:
all cells come from other cells
What happens to the temperature of the water when it reaches its boiling point and begins to vaporize?
Answers
Answer:
Vapor pressure increases with temperature because molecular speeds are higher as temperature increases. Water boils at 100 °C because the vapor pressure exceeds atmospheric pressure at this temperature.
Explanation:
what movie do they say rest in peace when somebody was going to sleep
Answers
Answer:
It is from the movie "Till death do us part" released in 2017 on September 29th about a worrisome couple named Michael and Madison Roland. They planned to spend the rest of their lives together, but Michael's controlling ways turn their perfect marriage into an abusive roller-coaster ride that no woman could survive. With the help of her best friend, Madison decides to get away. After adopting a new identity, she meets Alex Stone and learns to love again. All seems well until Michael discovers Madison's whereabouts and re-creates her nightmare.
Explanation:
(Heyy remember me? lol)
What is the approximate mass of one proton?__amu; and the approx. mass of a neutron?___amu
Answers
Answer:
I don't have an answer but did you ever get it?
Explanation:
I need help.
Atoms contain nuclei with electrons orbiting
Answers
Answer:
please mark brainliest!
Explanation:
Atoms consist of a nucleus made of protons and neutrons orbited by electrons. Quarks came together to form protons and neutrons, and these particles combined into nuclei. This all took place within the first few minutes of the universe's existence, according to CERN.
How does gravity affect your everyday lives?
Answers
Answer:
gravity's is why I can sit or jump and not fly into space and is why we have a atmosphere. basically gravity is why my daily life even exist.
Explanation:
Answer:
Gravity keeps us grounded. it helps us everyday just to stay on the ground. If we didnt have gravity we would just flout away.
A household variety of coal is
1 point
Peat coal
Lignite coal
Bituminous coal
Anthracite coal
Answers
Answer:
Anthracite coal
Explanation:
Anthracite coal has highest amount of carbon and has clean burning properties. So, it is used as a household coal.
What causes tectonic plates to move?
A. When the mantle moves, the plates move.
B. When the inner core moves, the plates move.
C. When the outer core moves, the plates move
Answers
This is because magma comes from the mantle and once it becomes lava and hardened, it can turn into land. This causes tectonic plates to shift.
On what is the geological time scale based?
A: changes in climate and historical records
B: geological and biological events
C: geological events
D: evolutionary events
Answers
Answer: The answer is b for sure
Explanation: Because, I took the test
what element am i ? i have 74 protons ?
Answers
Answer:
Explanation: tungsten
The element with 74 protons is Tungsten, a chemical element.
V=5, M=10 What is the density?
Answers
Answer:
the answer to this question is 2 kilogram/cubic meter
Explanation:
which of the following is a pure substance choose all that apply
a}fruit juice
b}nickel
c}salt water
d}rust
Answers
Answer:
nickel and rust I think
Which of these substances will NOT stop iron from rusting?
Answers
Answer:
u didn't list anything
Explanation:
buh water and oxygen forming hydrated iron
Explain what it means for energy to be conserved.
Answers
To solve this we must be knowing each and every concept related to conservation of energy. Therefore, in the below given ways we can define conservation of energy.
What is conservation of energy?Energy conservation may be defined simply as the process of consuming less energy. Energy conservation also entails changing behaviors and routines to consume less energy.
Consumers can gain from energy saving in terms of the economy and the environment. Energy conservation has several advantages for the environment, including cheaper energy prices.
Conserving energy can also help prevent the extinction of plants and animals. Start energy conservation right away if you wish to exist in a healthier and happier society.
Therefore, in the above given ways we can define conservation of energy.
To know more about conservation of energy, here:
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What type of hydrocarbons are called praffins?
Answers
Answer:
saturated hydrocarbons are called paraffin:)
does sodium chloride retain any characteristic of sodium or chlorine?
Answers
Answer:
When this occurs, sodium will donate an electron (which is a negatively-charged particle) to chlorine. This makes sodium slightly positive and chlorine slightly negative. Opposite charges attract, right? So then, sodium ions will attract chloride ions and form an ionic bond.
Explanation:
At a pressure of 505 kPa, the volume of a gas is 12.00 mL. Assuming the temperature remains constant,
at what pressure will the new volume be 8.00 mL?
Answers
Answer:
757.5 kPa
Explanation:
Boyle's law states that p1 * v1 = p2 * v2
v1 = 12 mL
v2 = 8 mL
p1 = 505 kPA
p2 = ?
(505)(12) = (p2)(8)
6060 = (p2)(8)
p2 = 757.5