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chubhunter [2.5K]
3 years ago
13

Quantitative observations always include _______.

Chemistry
2 answers:
Vlad [161]3 years ago
8 0

The answer to your question is,

A. Numbers

-Mabel <3

deff fn [24]3 years ago
8 0

Answer:

A. numbers

Explanation:

Quantitative observations are those that quantify data through the use of numbers. This is done in order to generalize results from a sample to the population that is being studied. Quantitative research tends to rely on random samples and statistical data and analysis. Moreover, it tends to use methods such as questionnaires, surveys and interviews.

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Explain why you cannot just take away a proton to make a halogen negative.​
Ilia_Sergeevich [38]

The force that holds protons and neutrons together is too strong to overcome.

<h3>Explanation</h3>

Consider the location of the particles in an atom.

  • Electrons are found outside the nucleus.
  • Protons and neutrons are found within the nucleus.

Protons carry positive charges and repel each other. The nucleus will break apart without the strong force that holds the protons and neutrons together. This force is much stronger than the attraction between the nucleus and the electrons. X-rays are energetic enough for removing electrons from an atom. However, you'll need a collider to remove protons from a stable nucleus. You could well have ionized the atom with all that energy.

Also, changing the number of protons per nucleus will convert the halogen atom to an atom of a different element. Rather than making the halogen negative, removing a proton will convert the halogen atom to the negative ion of a different element.

6 0
3 years ago
Heterogeneous mixtures are throughout, while homogeneous mixtures are throughout.
lys-0071 [83]

Answer:

Ordinary table salt is called sodium chloride. It is considered a substance because it has a uniform and definite composition. All samples of sodium chloride are chemically identical. Water is also a pure substance. Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary. You may dissolve a small amount of salt or a large amount into a given amount of water. A mixture is a physical blend of two or more components, each of which retains its own identity and properties in the mixture . Only the form of the salt is changed when it is dissolved into water. It retains its composition and properties.

Homogeneous Mixtures

A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. The salt water described above is homogeneous because the dissolved salt is evenly distributed throughout the entire salt water sample. Often it is easy to confuse a homogeneous mixture with a pure substance because they are both uniform. The difference is that the composition of the substance is always the same. The amount of salt in the salt water can vary from one sample to another. All solutions would be considered homogeneous because the dissolved material is present in the same amount throughout the solution.

One characteristic of mixtures is that they can be separated into their components. Since each part of the mixture has not reacted with another part of the mixture, the identities of the different materials is unchanged.

5 0
3 years ago
Which best describes an element?
joja [24]
An element is a pure substance
4 0
3 years ago
Read 2 more answers
Radioisotopes are unstable because they contain an excess number of:.
myrzilka [38]
Neutrons.

Not sure if you need a full explanation but let me know if you do :]
4 0
3 years ago
Which products would form if chlorine gas was bubbled through a solution of sodium bromide?
Ivenika [448]
A displacement reaction will occur from the system given above. The chlorine molecules will displace the bromide ions in the solution of sodium bromide. The reaction will yield to sodium chloride and bromine. The reaction will be:

2NaBr + Cl2 = 2NaCl + Br2
8 0
3 years ago
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