Water molecules are polar covalent molecules. There is a partial negative charge near the oxygen atom and partial positive charges near the hydrogen atoms due to the uneven distribution of electrons between the atoms, which results in the formation of hydrogen bonds between water molecules. The polarity of water molecules contributes to many properties of water that are important for biological pro

Answer:

Steel is an example of a solid-solid solution (aka an alloy).

Explanation:

Wood:

Wood comes from trees, that are growing out of the ground, but not TECHNICALLY part of the earth.

Stone:

Stone is a part of the earth, created by a lot of minerals combining, and molten rock hardening a LOOOOOOONG time ago.

Answer:

Answer B: Heterogeneous

Explanation:

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The zero calibration of the electronic balance allows to maintain the precision of one digit.

Electronic measurement equipment has a mechanism to set the zero of the measurement every time the equipment is turned on, this procedure must be carried out to eliminate:

The methods of regurgitating the zero of the balance consists of measuring the weight without masses and bringing this value to zero, in general by changing some adjustable parameter of the balance, for example magnetic field current, reference level with a beam of light.

With this calibration it will be achieved that there is always a precision digit in the readings.

With Electronic Balance Calibration it is possible to have a pressure digit

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Answer:

The zero is the estimated digit.

Explanation:

If the zero was left off of the measurement, people would assume the tenths place was the estimated digit.

The part of John Dalton’s theory was disproved by J.J. Thomson’s cathode-ray tube experiments is; "Atoms are indivisible".

One of the major postulates of the Dalton's atomic theory is that the atoms of elements are "indivisible".

This idea resounds from the earliest ideas of Greek philosophers concerning the atom.

Through the cathode-ray tube experiments, J.J. Thomson discovered sub-atomic particles.

This nullified the idea that atoms are indivisible.

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Beakers are flat bottom laboratory glassware that can be used to hold liquid in the laboratory. A test tube is a laboratory glassware that is unmarked and can be used to heat a liquid over a flame.

The correct answer is option C: Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.

Several glassware are very useful in the laboratory especially when dealing with liquids.

Two among these important glassware are beakers and test tubes. A beaker is mostly used to hold liquids while a test tube is used to both hold and heat liquids if need be during a laboratory experiment.

Beakers are graduated by the side while test tubes are unmarked.

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Answer:

solids

Explanation:

solids aren't very malleable of prone to change shape and/or volume so...

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Answer:

becoz vvv is always with you

Answer:

Alkali metals have one valence electron on their outer shell. They are more stable when they have eight valence electrons so they tend to loose that one electron and obtain a full octet, therefore become stable

Answer:

Ice melts when heat is provided to it.

Explanation:

When heat is provided, the kinetic energy of the particles increases. The particles start vibrating. As you keep providing heat, the particles start vibrating more strongly and with greater speed. Some particles become so energetic, that they are able to break the force of attraction and move away as a liquid.

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Answer:

Proteins, carbohydrates, nucleic acids, and lipids are the four major classes of biological macromolecules—large molecules necessary for life that are built from smaller organic molecules. Macromolecules are made up of single units known as monomers that are joined by covalent bonds to form larger polymers.

Explanation:

Have a great day!

Answer:, , nucleic acids, and lipids are the four major classes of biological macromolecules—large molecules necessary for life that are built from smaller organic molecules. Macromolecules are made up of single units known as monomers that are joined by covalent bonds to form larger polymers. I forgot to add carbohydrates and proteins also my bad

i just started learning aboit this too

Explanation:

Answer:

A. the water molecules do not change chemically and are still H2O

Explanation:

The arrangement of molecules is the only change that occurs

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Answer:

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Answer:

Objects in space follow the laws or rules of physics, just like objects on Earth do. Things in space have inertia. ... The movement of things in space is influenced by gravity. Gravity is an important force that can change the course of bodies in space or pull them off of one course, or even cause them to crash together.

Explanation:

i Hope This Helps :3

Answer: It is Turing on an axis, in a 360* motion. OR, since you didn’t specify, it could be revolving around the sun, meaning it is traveling around the sun once.

If you place a glass rod over the burning candle, the glass turns black. The happening in the following substances are:

a. the wax is a both.

b. the wick is neither

c. the glass rod is a physical change.

Chemical reactions are those in which the substance changes its composition and totally transformed into a new substance. A chemical reaction involves reactants ad products.

Physical changes are temporary or permanent. Due to changes in the temperature or environment, some matter changes its shape and size.

Thus, the reactions are:

a. the wax is a both; Physical change-solid to liquid. Chemical change-burned to CO2 + H20 + heat + carbon as seen as black on the rod.

b. the wick is neither; the wick does not change, just provides a conduit for the wax to flame

c. the glass rod is a physical change; the carbon is only deported.

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Answer:

A

Explanation:

Gaseous gallium will consist of atoms separated from each other by a large distance and do not experience inter-particle attractive forces.

There are three states of matter;

Matter can exist in all these states of matter depending on the extent of inter-particle attractive forces in the substance.

Inter-particle attractive forces are strongest in solids hence they have a definite shape and volume and do not flow.

Liquids have weaker inter-particle attractive forces than solids hence liquid particles can flow. Liquids have a definite volume but not a definite shape.

Gases have almost no inter-particle attractive forces between particles hence gas particles are separated by large distances and move at very high velocities. A gas does not have definite shape or volume.

A model of gaseous gallium will show atoms of gallium separated by large distances and do not experience inter-particle attraction.

A model of gas particles is shown in the image attached to this answer.

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Answer:

= 10000000000000 Nanoliters

Explanation:

1.0 x (10^4) L =

10 000 L

10 000L converted into Nanoliters

= 10000000000000 Nanoliters

Hope this helps

Answer:

Mass is 5560 grams

Explanation:

[tex]{ \boxed{mass = density \times volume}}[/tex]

Density is 5.56 g/L

Volume is 1 m³ = 1,000 L

Substitute the following to get mass:

[tex]mass = (5.56 \times 1000) \\ { \boxed{ \boxed{mass = 5560 \: grams}}}[/tex]

C2H2OH is the answer

I am not sure but I think

Answer:

Recall the two conceptual steps necessary to dissolve a solute and form a solution

Key Points

There are two conceptual steps to form a solution, each corresponding to one of the two opposing forces that dictate solubility.

The first conceptual step is dissolution, which corresponds to the force of the solvent-solvent and solute-solute intermolecular attractions that needs to be broken down.

The second conceptual step is solvation, which corresponds to the force of the solute-solvent intermolecular attraction that needs to be formed in order to form a solution.

Many intermolecular forces can contribute to solvation, including hydrogen bonding, dipole-dipole forces, Van Der Waals forces, and ion-dipole interactions.

Term

intermolecular forcesattractive and repulsive forces between molecules

The strength of the intermolecular forces between solutes and solvents determines the solubility of a given solute in a given solvent. In order to form a solution, the solute must be surrounded, or solvated, by the solvent. Solutes successfully dissolve into solvents when solute-solvent bonds are stronger than either solute-solute bonds or solvent-solvent bonds.

Qualitatively, one can determine the solubility of a solute in a solvent by using the rule “like dissolves like”. In general, solutes whose polarity matches that of the solvent will generally be soluble. For example, table salt (NaCl) dissolves easily into water (H2O) because both molecules are polar.

Intermolecular Forces and Their Importance in Solution Formation

There are two conceptual steps to form a solution, each corresponding to one of the two opposing forces that dictate solubility. If the solute is a solid or liquid, it must first be dispersed — that is, its molecular units must be pulled apart. This requires energy, and so this step always works against solution formation (always endothermic, or requires that energy be put into the system).

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Answer:

Hola Amigas y Amigos

Explanation:

La Tierra gira alrededor de su eje, al igual que una peonza gira alrededor de su eje. Este movimiento giratorio se llama rotación de la Tierra. Al mismo tiempo que la Tierra gira sobre su eje, también orbita o gira alrededor del Sol. Este movimiento se llama revolución.

¡¡Espero que esto ayude!!

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Answer:

soapy water is not good for plants irrigation that is what I learn

Answer:

Soapy water is not good for plant irrigation because soapy water contains sulphate in it which is not good for the development of plants.

Explanation:

hope this helps

Answer:

the option A is right matter keeps it's chemical makeup like size shape volume and state

The amount of physical material in an object

Answer:

I don't know the answer sorry

Answer:

False hoge iska answer

Explanation:

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