CHEMISTRY HIGH SCHOOL

What is the simplest whole-number ratio of atoms in a molecule or formula unit called?

Answers

Answer 1
Answer: Answer: Empirical formula

Empirical formula referst to the simplest whole-number ration of atoms in a molecule. A compound's molecular formula can either be the same or multiple of its empirical formula. The structural and molecular formulas are also part of the compound formulas
Answer 2
Answer: Hi there! The simplest whole-number ratio of the atoms in a molecule of formula is called the Empirical formula.

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It is possible for a particular element to have various number of neutrons

Answers

Yes, it is possible for a particular element to have various number of neutrons, and that would make it have an isotope. 

Which phase of matter consists of particles that are held together but have the ability to flow past each other?

Answers

Explanation:

In solids, molecules are held together due to strong intermolecular force of attraction between them. These molecules do not move past each other as they are fixed at their position. As a result, solids have definite shape and volume.

In liquids, molecules are less tightly held as a result the molecules are able to move and hence they slide past each other. Liquids do not have fixed shape and volume.

In gases, molecules are held by weak Vander waal forces. Therefore, they move rapidly from one place to another with more collisions.

Thus, we can conclude that liquid is the phase of matter which consists of particles that are held together but have the ability to flow past each other.
liquid making it the correct answer

What are the two parts of an atom?

Answers

The two main components of an atom are the nucleus and the cloud of electrons.

Answer:

The two main components of an atom are the nucleus and the cloud of electrons.

Explanation:

I took the quiz

What has the same number of valence electrons in the outermost shell?“These ____ have the same number of valence electrons in their outermost shell.”


Word bank-
Groups
Families
Periods
Electrons

Answers

Answer:

Groups

Explanation:

Elements with the same number of valence electrons are found in the same column(group) of the Periodic Table.

A student designs an experiment where she will put the same amount of air into three different balloons. One balloon will be submerged in ice water, oneballoon will be carefully heated with a hair dryer, and the last balloon will be left alone. After making the changes, the student then will then measure the diameter of each balloon. The dependent variable is:

A)The temperature of the balloon
B)The diameter of the balloon
C)The amount of air
D)The three balloons

Answers

To solve this we must be knowing each and every concept related to experiment. Therefore, the correct option is option B among all the given options.

What is experiment?

An experiment is a qualitative approach used in the scientific process to settle disputes between competing products or hypotheses. Additionally, experiments are used by researchers to confirm or refute new or existing theories.

A student designs an experiment where she will put the same amount of air into three different balloons. One balloon will be submerged in ice water, one balloon will be carefully heated with a hair dryer, and the last balloon will be left alone. After making the changes, the student then will then measure the diameter of each balloon. The dependent variable is the diameter of the balloon.

Therefore, the correct option is option B.

To learn more about experiment, here:

brainly.com/question/26929348

#SPJ2

Answer:

B

Explanation:

The reaction below demonstrates which characteristic of a base?CuSO4(aq)+2NaOH(aq)->Cu(OH)2(s)+Na2SO4
the ability of bases to release sodium ions into solution
the ability of bases to release hydrogen ions into solution
the ability of a base to react with carbonate or bicarbonate
the ability of a base to react with a soluble metal salt

Answers

I think the correct answer from the choices listed above is the last option. The reaction below demonstrates a characteristic of base which is the ability of a base to react with a soluble metal salt. Hope this answers the question. Have a nice day.
In the reaction of the type: 
           CuSO4(aq)   +   2NaOH(aq)  ->   Cu(OH)2(s)   +   Na2SO4

Herein, base (NaOH) reacts with water soluble metal salt (CuSO4) to form metal hydroxide.

This displays ability of a base to react with a soluble metal salt. Hence correct answer is option D. 
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As a consequence of the discovery of the nucleus by Rutherford, which model of the atom is thought to be true?Protons, electrons, and neutrons are evenly distributed throughout the volume of the atom. Electrons are distributed around the nucleus and occupy almost all the volume of the atom. The nucleus is made of electrons and protons. The nucleus is made of protons, electrons, and neutrons.