CHEMISTRY HIGH SCHOOL

What is the definition of chemistry​

Answers

Answer 1
Answer: : a science that deals with the composition, structure, and properties of substances and with the transformations that they undergo
2a : the composition and chemical properties of a substance
the chemistry of iron
b : chemical processes and phenomena (as of an organism)

Related Questions

Find the empirical formula of a compound which contains 54.93% potassium, 38.73% boron and 6.34% hydrogen.A. KBHB. KB2H4C. KB3H9D. K2B5H9
If an atom has 6 protons and 5 neutrons, what is its mass? _________ amu
Which of the following materials is not considered to be a semiconductor? germanium tin silicon aluminum
According to the wave-mechanical model of the atom, an orbital is a region of the most probable location of(1) an alpha particle (3) an electron(2) a gamma ray (4) a proton
What is the main pigement for photosyenthesis inchloroplasts

Alcohol contains __________
a. ethanol.
b. gasoline.
c. opiates.

Answers

Answer:

Alcohol contains A. ethanol.

Explanation:

Alcohol beverages are drinks that contain more than a minimal amount of ethyl alcohol or ethanol. Ethanol is a chemical compound, considered the main type of alcohol. It is produced by grain fermentation and used as a solvent, as an additive to gasoline and as the intoxicating ingredient of beer, wine, distilled spirits and other beverages.

the answer is A. Ethanol. Ethanol is an active principal in alcoholic beverages

What is quantitative and qualitative

Answers

Quantitative is a description in numbers , and qualitative is a description with words

Which chemical formula shows a covalent compound?NaCl

HBr


MgO


CO2

Answers

Covalent compound CO2

Answer:

CO2

Explanation:

A covalent compound is a compound between 2 nonmetals.  For this reason, NaCl and MgO can be eliminated since both contain metals.  While neither H nor Br are metals, in HBr H is acting as a metal.  CO2 is the only choice containing both nonmetals, with both elements acting like nonmetals as well.

ICl has a higher boiling point than Br2. What is the best explanation for this?a.)Br2 experiences dipole0dipole interactions.
b.)ICl experiences dipole0dipole interactions.
c.)Br2 forms hydrogen bonds.
d.)ICl experiences induced dipole0induced dipole interactions.

Answers

The best answer is B. ICl experiences induced dipole-induced dipole interactions. Both iodine and chlorine belongs to the same group of the periodic table. Electronegativity decreases as you go down a group therefore Cl will have a greater attraction with the bond it forms with another atom. Dipole-dipole interactions form between I and Cl. For the Br2 molecule, no dipole occurs because they are two identical atoms. Therefore we will be expecting ICl will have a higher boiling point due to higher binding energy it forms.

Magma from Earth's interior oozes from the cracks at mid-ocean ridges.
a. True
b. False

Answers

The answer is A. True

Magma from Earth's interior oozes from the cracks at mid-ocean ridges.

true is the right one

In the reaction 2H2 + O2-->2H2O how many hydrogen molecules are needed to produce two water molecules

Answers

2 hydrogens per water molecule

Answer:

B

Explanation:
Other Questions
Alchemy is a branch of ancient knowledge that states lead metal is a form of gold metal. Which of these best explains whether alchemy is a science or pseudoscience? It is a science because ancient knowledge is often reliable. It is a science because metallurgy is known to be a branch of science. It is pseudoscience because ancient knowledge is mystical yet reliable. It is pseudoscience because each metal is known to be a unique element.
If 62.8 g Ca react with 92.3 g HCl according to the reaction below, how many grams of hydrogen gas will be produced, and how many grams of the excess reactant will be left over?Unbalanced equation: Ca + HCl → CaCl2 + H2
If 31.8 grams of LiCl are dissolved in 225 grams of water, what is the concentration of the solution in percent by mass?
What is the percent by mass of potassium in K3Fe(CN)6?16.96%21.88%25.53%35.62%