CHEMISTRY HIGH SCHOOL

What is a compound in chemistry

Answers

Answer 1
Answer: Two types of chemical bonds common in compounds are covalent bonds and ionic bonds. The elements in any compound are always present in fixed ratios. Example 1: Pure water is a compound made from two elements - hydrogen and oxygen.

Related Questions

What is the difference between an element and a compound in chemistry, and can you provide examples of each?
Which of the following explains why hot liquids have a greater average energy of motion than cold liquids? *Hot liquids have more electronsCold liquids have more electrons.Particles in hot liquids move faster than particles in cold liquidsParticles in cold liquids move faster than particles in hot liquids.
Science fair ideas???
Explain the cause of the daily tides and give two examples of human activities affected by tides.
Which of the following is the best name for a compound made from nitrogen and oxygen? (N2O3) nitrogen oxide nitrogen II oxide nitrogen trioxide dinitrogen trioxide

How many mL of a stock solution of 2.00 M KNO3 are needed to prepare 100.0 mL of 0.15M KNO3? with work plz

Answers

Using the law of dilution :

Mi x Vi =  Mf x Vf

2.00 x Vi = 0.15 x 100.0

2.00 x Vi = 15

Vi = 15 / 2.00

Vi = 7.5 mL

hope this helps!

Which of the following is an example of a mixture? Option 1: Pure water Option 2: The air in your room Option 3: Gold Option 4: All of the above

Answers

Answer:

2

Explanation:

Pure water is not a mixture....it is only water

gold ...is only gold

2.  air IS a mixture of various gases.....nitrogen , oxygen, co2 etc

Final answer:

Option 2: The air in your room. The air in your room is an example of a mixture because it consists of various gases that can be separated from each other.

Explanation:

The correct answer is Option 2: The air in your room.

A mixture is a combination of two or more substances that are not chemically bonded together. The air in your room is a mixture because it consists of various gases such as oxygen, nitrogen, carbon dioxide, and others. Each gas retains its individual properties and can be separated from the others.

On the other hand, pure water is a compound because it consists of two hydrogen atoms bonded to an oxygen atom, while gold is an element because it is composed of only gold atoms.

Learn more about Mixtures here:

brainly.com/question/22742069

#SPJ11

Is melting ice an endothermic or exothermic? its a big class discussion in chemistry and the teacher won't tell us until the whole class agrees

Answers

It is an Endothermic because the ice cube is absorbing the heat making the ice cube melt. It can not be Endothermic because it is not releasing any heat it is melting.

Determine the number of moles 28.8 g Br2

Answers

well, you would just divide 28.8 by the molar mass of Br2 (the gram amount on the periodic table x2 because there's two of them)

Would you describe acetone in the gaseous state as a vapor or gas

Answers

Acetone is a vapor, since it is normally a liquid at room temperature, which is the definition of a vapor.

At which temperature would atoms of a He(g) sample have the greatest average kinetic energy?(1) 25°C (3) 273 K
(2) 37°C (4) 298 K

Answers

Answer;

37 ° C

Explanation;

-The average kinetic energy of gas particles is directly proportional to the the temperature. An increase in temperature increases the speed at which the gas molecules move, and thus increasing their kinetic energy. At any given temperature gases have the same kinetic energy.

-Hence, the temperature at which Helium gas will have the highest kinetic energy is at the highest temperature, which is 37° Celsius.

Answer:

2: 37°C

Explanation:

This is because the temperature at which Helium gas will have the highest kinetic energy is at the highest temperature, which is 37° Celsius.
Other Questions
As the first five elements in Group 15 areconsidered in order of increasing atomic number, first ionization energy (1) decreases (2) increases (3) decreases, then increases (4) increases, then decreases
Which two compounds have the same molecular formula but different chemical and physical properties?(1) CH3CH2Cl and CH3CH2Br(2) CH3CHCH2 and CH3CH2CH3(3) CH3CHO and CH3COCH3(4) CH3CH2OH and CH3OCH3
The halogens, the elements of Family 17 on the periodic table, combine easily with elements from Family 1. When a halogen reacts with a metal, what type of compound is formed? 1.potassium             2. alloys            3.noble gas             4.salt
Stoichiometry problems which give a known amount of one reactant and solve for an amount of product frequently state that there is "an excess" or "plenty" of the reactant(s) not given. (For example, in the equation 2Na + 2H2O → 2NaOH + H2, how many grams of sodium hydroxide are produced from 3.0 mol of sodium with an excess of water?) Why is it necessary to know that there is an excess of these reactant(s)?