Answer:
The level of colored liquid rises when the thermometer is placed in hot water. Heat causes the molecules of the liquid to get farther apart. The molecules of the liquid break down into atoms and take up more space.
Explanation:
Which sphere protects Earth’s surface?
atmosphere
biosphere
geosphere
hydrosphe
Answer:
Hiii
Explanation:
Your answer is Atmosphere
The atmosphere protects life on Earth by absorbing ultraviolet solar radiation and warming the surface through heat retention (the greenhouse effect). The atmosphere is further classified into multiple layers by temperature, which include the thermosphere, the mesosphere, the stratosphere, and the troposphere.
Hope it helps:)
this is the new one I will mark brainlist NO LINKS OR I WILL REPORT YOU
Answer:
ok what is new. ........,,,,,
A student was adding baking soda and vinegar in a bottle. They then put a balloon on top of the bottle immediately after adding them together. The student observed that the balloon inflated and got larger. The student then predicted that the chemical reaction between the vinegar and the baking soda had created brand new matter, and would have more mass at the end of the reaction. Would you agree with the student’s prediction or not? Explain your answer.
Whoever answers my question gets BRAINLIEST!!
Answer:
The prediction of the student about the amount of reactant and product is incorrect.
No, I do not agree with the student’s prediction because the amount of reactant is always equals to the amount of product. According to the Law of Conservation of Mass, mass cannot be created nor destroyed. Therefore in any chemical reaction the mass of the products must equal or same to the mass of the reactants so according to this law, the prediction of the student is incorrect.
Explanation:Give brailiest please
Answer:
The chemical reaction that occurs when vinegar and baking soda (sodium bicarbonate) are combined, creates a gas that is known as carbon dioxide (or CO2). I would agree with the student's prediction because the atoms rearrange themselves to create the product.
Explanation:
Hope this helps! Pls give brainliest!
If there is H2O and O2 what it's going to be
Answer:
o232
Explanation:
write the solubility equilibrium for the slightly soluble salt caf2.
Answer: write the solubility equilibrium and the solubility-product constant expression for the slightly soluble salt CaF2 CaF2 (s) <---> Ca2+ (aq) + 2F- (aq) Ksp=[Ca2+][F-]2.
Explanation:
What does it mean to say that a wave is cyclic, or periodic, disturbance?
Answer:
Wave is a disturbance or energy that propagate through medium from one point to other point
So basically it is a flowing energy that flows into the medium and hence medium particles start oscillating about their mean position to and fro.
This motion of medium particles or this to and fro motion is about their mean position and this will always be cyclic or periodic motion
This means the disturbance or energy continuously flow through the medium such that it will change the position of medium particle and this will be cyclic in order
For an example
y(x,t) = Asin(kx - ωt + φ)
So here above equation of wave is a travelling wave in which displacement of medium particle from its mean position is given by "y"
Now we can see that this disturbance depends upon the sine function and it will repeat its same position after every 2 pi time interval as it is cyclic function for this value
Due to this phenomenon of repetition of its same position we can say that it is disturbance of wave is cyclic.
Explanation:
Why are alloys generally used to make everyday objects?
Answer:
Alloys are often stronger and less active than pure metals. Alloys have higher melting point than pure metals.
Will the lizard make it to the other side of the road before the car gets there?
yes or no
No not at all because of its size and the amount of speed from the car. then the impact will be bad
PLZZ HELP
Which of the following Is acompound?
Ne
N₂
Naci
02
Answer:
[tex]N2[/tex]
Explanation:
Because
Molecular nitrogen (N2) is a very common chemical compound in which two nitrogen atoms are tightly bound together.
why is beryllium-8 different from beryllium-9 in terms of the nuclear particles?
Answer:
Beryllium-8 (8Be, Be-8) is a radionuclide with 4 neutrons and 4 protons. It is an unbound resonance and nominally an isotope of beryllium. It decays into two alpha particles with a half-life on the order of 10−16 seconds; this has important ramifications in stellar nucleosynthesis as it creates a bottleneck in the creation of heavier chemical elements. The properties of 8Be have also led to speculation on the fine tuning of the Universe, and theoretical investigations on cosmological evolution had 8Be been stable.
Explanation:
Solve for the Gradient AB. The units will be in m/km but you should not
leave units in the answer because the answer key will not take them. Write
the answer to the tenths place and no units.
.X
B
Lake
-100
Blue River
50
А
D
5 kilometers
Contour interval 10 meters
N
0
2
3
5 kilometers
Answer:
help me mark me as a brinliest
Elements have different properties because they are made up of different types of
atoms.
Right a 5 sentence paragraph explaining this!!!
Answer:
,
Explanation:
Answer:
An atom is the smallest partical in the universe that makes up everything you see around you. Every chemical element is also made up of atoms. Since atoms are what give each element their defining characteristics, each element can be composed of multiple atoms but you must have all of the same type of atoms combined in order for it to be considered an element. For example the element gold can only contain gold atoms. If you mix the atoms of one element with the atoms of another your substance has then been changed from an element to a compound.
Explanation:
the melting point of a substance is also the same as the:
Answer:
The melting point of a solid is the same as the freezing point of the liquid. At that temperature, the solid and liquid states of the substance are in equilibrium.
Pure gold: 1063
Pure silver: 961
Que instrumentos de laboratorio usaron luis y Juan?
Luis y Juan querían hacer una investigación sobre la rapidez de disolución de una pastilla efervescente en el ácido acético a temperatura caliente. Para esto, tenían que triturar la pastilla y luego utilizar solamente 15 gramos de la sustancia. Tenían que medir 50 ml de ácido acético y colocar el mismo en un recipiente donde se pueda calentar sustancias, pero que el vapor generado se libere rápido. Al agregar ambas sustancias al recipiente de vidrio, lo comenzaron a calentar. Una vez se iba calentando, agitaron las sustancias poco a poco y con mucho cuidado, tomaron los cambios en temperatura de cada 2 minutos. Al finalizar el experimento, ellos compartieron sus resultados con sus compañeros de clase.
Drop it into water. Measure the time required for tablet to fully dissolve. Be prepared to start and stop on time. The reaction will take less than 15 seconds.Answer:
Explanation:
what do you think life on earth will be like if chemistry had not been put to practical use
Explanation:
Archaism
Things on Earth would be unexplainable
Is vegetable soup a homogeneous or heterogeneous mixture
Answer:
heterogeneous
Explanation:
have you ever started to eat veg soup and begin with a spoon full of broth, no veggies,
Then when you get to the end, there are veggies. no broth.
In a homogeneous mixture, every sample is the same
in a heterogeneous mixture, the composition changes from sample to sample
Why do atoms exchange or share electrons during bonding?
to obtain a full outer electron shell
to attract an ion with the opposite charge
to become neutral
to have eight inner level electrons
Answer:
to obtain a full outer shell
Explanation:
The atoms of some elements share electrons because this gives them a full valence shell. ... If atoms can't achieve a full outer shell by transferring electrons, they resort to sharing. In this way, each atom can count the shared electrons as part of its own valence shell. This sharing of electrons is covalent bonding.
Atoms generally exchange or share electrons during bonding because they want to obtain a full outer electron shell. Thus, the correct option for this question is A.
What is Chemical bonding?Chemical bonding may be defined as a type of interaction that is significantly accomplished through the association of atoms into molecules, ions, crystals, and other stable species that make up familiar substances.
According to the context of this question, the atoms of some elements typically transfer their electrons to the other elements in order to achieve a fully filled outermost shell.
If they do not have a tendency of transferring, they follow a different mechanism of sharing their electrons. The sharing of electrons gives rise to the formation of covalent bonding.
Therefore, atoms generally exchange or share electrons during bonding because they want to obtain a full outer electron shell. Thus, the correct option for this question is A.
To learn more about Sharing and transferring electrons, refer to the link:
https://brainly.com/question/1362698
#SPJ2
how many water molecules self ionize in one liter of water
Answer:
yes
Explanation:
because I think it is correct fo u
PLEASE HELP! Which rock is an example of a chemical sedimentary rock?
coal
iron ore
shale
sandstone
Answer:
sandstone
Explanation:
Answer: iron ore
Explanation: The iron ore deposits are found in sedimentary rocks. They are formed by the chemical reaction of iron and oxygen mixed in the marine and fresh water.
if an atom has 8 protons, 8 neutrons, and 8 electrons and then loses a neutron, what is it?
Answer:
A Cation
Explanation:
Is table sugar(sucrose) a substance or a mixture
Answer: its a compound
what is the primary function of c6h12o6 in animals?
Answer:
Energy
Explanation:
C6H12O6 is glucose and the primary function of glucose is to provide energy.
which type of control agent exerts noncompetitive inhibition?
Answer:
D
Explanation:
If your choices are:
a) Substrate analog
b) Protein kinase
c) Allosteric effector
d) Both (b) and (c).
then your answer is D :)
Research the validity of ONE of the following hypnosis claims using reputable sources. (No blogs, social media posts, etc.)
1.Hypnosis can help people stop smoking.
2. Hypnosis can help people with weight loss.
A. To what extent does hypnosis work in regards to these behaviors?
B. Would you recommend them? Why or why not?
C. What sources did you use to find your answers.
Answer:
1. Hypnosis can help people stop smoking.(Yes)
To what extent does hypnosis work in regards to these behaviors?
A study by McNeilly and colleagues found that hypnosis may help quitters to focus on their own resources to curb cigarette cravings. Other researchers have suggested that success rates are caused by the relaxation effects of hypnosis. These might allow people to cope with nicotine addiction and nicotine withdrawal.
Would you recommend them? Why or why not?
I wouldn't recommend it because, The evidence for hypnosis as a successful smoking cessation method is a mixed bag. Some studies have seen high success rates, whilst others are more modest. A review of 59 different trials found that hypnosis is often better than no support at all.( so its a risk)
Explanation:
microfilaments are composed of ____________ in ____________ arrangement.
Explanation:
microfilaments are composed of repeating actin subunits in a thin double-helix arrangement.
subscripts in chemical formulas are used to indicate the relative proportions of the elements in a
Answer:
relative proportions of the elements in a chemical reaction
A molecule or a compound can easily be represented by their formula.Subscripts in chemical formulas are used to indicate the relative proportions of the elements in a compound.
What is chemical formula?A chemical formula represent the identity and number of elements in a molecule or compound. Each element in periodic table has their own symbols. For example, hydrogen is H, oxygen having O, N for nitrogen, Na for sodium etc.
These chemical symbols are came from the first one or two letters of the Latin names of the elements. The number of these elements in a compound is given as subscripts of their symbols.
For example, there are two hydrogens and one oxygen in water and the formula is H₂O. Similarly the formula of carbon dioxide is CO₂ where one carbon and two oxygens are present. In this way the compounds can be easily identified and distuinguished using their chemical formulas.
To find more about chemical formula, refer the link below:
https://brainly.com/question/29031056
#SPJ5
A. IH, III, IV
C. I, II and IV only
B. I, ll and Ill only
D. III and IV only
2. A liquid has the following properties: one-phase, colorless, boils at varying
temperature. Which of the following BEST describes the liquid?
A. solution
C. suspension
B. substance
D. heterogeneous mixture
3. Jill has an unopened box of a 2-meter foil labeled as 100% aluminum. Jill takes just a
thumb-sized piece of the aluminum foil. Which of the following statement is TRUE
about the piece of aluminum foil that Jill took compared with the rest that was left in
the box?
A. Its mass and melting behavior are different.
Bits mass and melting behavior are the same.
C. The mass is different, but the melting behavior is the same.
D. The mass is the same, but the melting behavior is different.
Answer:
2. A. solution
3. C The mass is different, but the melting behavior is the same
30 g of hydrogen reacts with 120 g of oxygen to form water.How much water is produced?
136.9 g of copper sulfide breaks apart into sulfur and 111.6 g of copper.How much sulfur is produced?
According to law of conservation of mass.
In a chemical reaction Mass is neither created nor destroyed.
Mass of product =Mass of reactant#1
Mass of water
[tex]\\ \sf\longmapsto 30+120=150g[/tex]
#2
Mass of sulphur:-
[tex]\\ \sf\longmapsto 136.9-111.6=25.3g[/tex]
You will mostly find me in solid form at room temperature.
a
Metal
b
Nonmetal
(1) __________ are separated without any chemical reactions. There are many
different kinds of mixtures. Different mixtures are separated in (2)__________ ways.
Physical (3)__________ separates the components of varying sizes using a
spoon or any scooping material or by picking. The use of (4)__________ can be done
to separate the metallic materials from nonmetallic materials. (5)__________ is the
separation of an insoluble solid from a liquid mixture using a semipermeable
membrane like filter paper.
In decantation, the large particles of insoluble solid are separated from the
(6)__________ mixture. (7)__________ separates the soluble solid from the liquid
component of the solution by evaporating the liquid substance.
choices
magnet
mixtures
filtration
different
manipulation
evaporation
liquid
Answer:
1. Mixtures
2. Different
3. Manipulations
4. Magnet
5. Filtration
6. Liquid
7. Evaporation
