1. Obtain Information Search for and watch an
online video clip that shows the lotus effect.
What do
you
think causes this phenomenon?

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.

To learn more about chemical and physical reactions, refer to the link:

https://brainly.com/question/14929452

#SPJ2

Answer:

The metal molecules inside start to vibrate faster, causing the solid to change to liquid if exposed to the intense temperature over a long period of time.

Explanation:

As my answer states, but for an explanation, lets say you are boiling an ice cube, it will start to turn into liquid water, that is because it has been exposed to that heat for a long period of time. The same will happen for the metal, if its exposed for long enough, it will turn into a liquid, then can be turned into a gas because the molecules are vibrating so quickly that they start to easily move apart.

Hope this helps, let me know if any more clarification is needed.

Answer:

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

Explanation:

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.

Learn more: https://brainly.com/question/13157325

Answer:

please translate to English so I can help

Explanation:

the reason is bc I cant read this so jus comment in English and I'll reply the answer

Answer:

you need data that has at least one independent variable in order to plot a graph for a slope of the line

Explanation:

Isotones are nuclides that have the same neutron number but a different proton number. Therefore the answer is  C. boron and carbon.

Answer:

c) carbon and boron

Explanation:

They have the same number of neutrons but different number of protons.

They both contain 7 neutrons

Answer:

Ar

Explanation:

the last one

The diagram that shows a pure substance which is composed of only individual atoms and not molecules will be: argon gas. Option D is correct.

A pure substance composed of only individual atoms is called an element. In the periodic table, each element is represented by a unique symbol, and its atoms cannot be further broken down into simpler substances by chemical means.

Liquid water: Water (H₂O) is a compound composed of two hydrogen atoms bonded to one oxygen atom. It consists of molecules, not individual atoms.

Hydrogen gas: Hydrogen gas (H₂) is composed of two hydrogen atoms bonded together to form a diatomic molecule. It is not composed of individual atoms.

Carbon dioxide GAS: Carbon dioxide (CO₂) is a compound consisting of one carbon atom bonded to two oxygen atoms, forming a molecule of CO₂.

Argon gas: Argon (Ar) is an element, and in its pure form as a gas, it exists as individual argon atoms (Ar). It is not bonded to any other atoms, and there are no molecules involved. Therefore, argon gas is composed of individual atoms and represents a pure substance.

Hence, D. is the correct option.

To know more about argon gas here

https://brainly.com/question/29791626

#SPJ3

The teacher can present this information using a bar chart.

In science, charts are commonly used to present information where comparison is necessary.

Bar charts are especially useful when we intend to show large changes.

In the periodic table, elements exists in various states of matter;

Sometimes, as a teacher, you may need to compare the number of elements that exist as solids, gases, and liquids at room temperature.

This comparison is easily brought out using a bar chart since the changes involve large numbers.

Learn more; https://brainly.com/question/18092827

nail polish remover float

Answer:

it will float on water

explanation:

Geekette hypothesized that since it floated on the water, like ice does, it must be less dense. ... According to Ken Johnsen, who lists his expertise in chemistry, the components of nail polish indeed make it less dense than water

The answer is FALSE. I did it on ck-12

Answer:  This is hard to do accurately, but here is my best assessment.

Explanation:

Experiment:  B  -  describes how the experiment was done

Conclusion:  A  -  The data support the prevailing hypothesis

Research:  D   -   This is what we analyzed

Analysis:  C  -  We compared the data

Answer:

I don't know the answer sorry

The amount of physical material in an object

Answer:

520

Explanation:

This is easy

Answer:

Upon analysis of the results, a hypothesis can be rejected or modified, but it can never be proven to be correct 100 percent of the time. For example, relativity has been tested many times, so it is generally accepted as true, but there could be an instance, which has not been encountered, where it is not true.

Explanation:

Answer:

Calculator

Explanation:

A calculator is used to make, well calculations

You can use a scale to get information about the weight of an object, and you can observe how weight changes in relation to size etc.

For obvious reasons, you can observe different scents

Again a microscope is an observational tool

Answer:

I think he was right but not explaining

Explanation:

I think it is C cause.... the volume of a material is the amount of matter that matterial can hold. it should the the amount of space the whole material takes up.

so C is the answer.

pls make this the brainliest.

not because it is, but because I asked.

Answer:

Advantages of chemistry:-

•Basic knowledge of chemistry helps you to read and understand product labels.

•Chemistry can help you make informed decisions.

•Chemistry is at the heart of cooking. ...

•A command of chemistry can help keep you safe!

Disadvantages of chemistry:-

•It isn't a sustainable form of energy. ...

•It can be expensive.

•It can produce harmful waste.

•It can be used to create devastating weapons.

Answer:

d. Bacteria is the correct classification

Answer:

Mass is a measure of the amount of matter in a substance or an object. The basic SI unit for mass is the kilogram (kg), but smaller masses may be measured in grams (g). To measure mass, you would use a balance.

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).

#pa follow and heart po para sa iba pang answer at pa brainlest answer na den

Answer:

0.034 = 34×10^-3

Explanation:

This is because the special point is notated until it goes in front of the first counting number

Scientific notation is a way of expressing numbers that are very large or very small in a compact and standardized format. 0.034 in scientifc notation is written as 3.4 × 10⁻³

In scientific notation, a number is expressed as the product of a coefficient and a power of 10. The coefficient is a decimal number greater than or equal to 1 but less than 10, and the power of 10 represents the magnitude of the number. The power of 10 indicates the number of places the decimal point must be moved to obtain the original number.

For example:

The number 4,500,000 can be written in scientific notation as 4.5 x 10⁶, where the coefficient is 4.5 and the power of 10 is 6.

The number 0.000043 can be written in scientific notation as 4.3 x 10⁻⁵, where the coefficient is 4.3 and the power of 10 is -5.

Scientific notation allows for easy representation of very large or small numbers and simplifies calculations involving these numbers. It is particularly useful in scientific fields where values such as distances, masses, and concentrations can vary over a wide range.

Learn more about Scientific notation, here:

https://brainly.com/question/19625319

#SPJ6

Answer: 628.15 K

Explanation:

Add 273.15 to any temperature in Celsius to get it in kelvin

Answer:

Acid btw I am new in Brainly

Answer:

c

Explanation:

because when you crush an ice it  would break into peace's and the ice would not be a solid

Answer:

since it has lower mass. the force acting on it results in larger acceleration.