What does the atomic numbrr represent on the periodic table?
Answers
Answer:
Explanation:
The atomic number tell us the number of protons and neutrons in the nucleus of an atom. in other words ,each element has a unique number that identifies how many protons are in one atom of that element example, all hydrogen atoms, and only hydrogen atoms, contain one proton and have an atomic number of 1.
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An object was measured by a worker as 17.4cm long, however, the manufacturer specifications list the length of the object at 17.9cm. What is the percent error in the workers measurements? ( In chemistry)
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CAN ANYONE ANSWER THIS PLZZZ ?!?
How are chemical changes of matter related to the organization of the periodic table
law and Charles's law.
Gay-Lussac's Law Charles's Law
O involves changes in temperature
O has a constant volume
O shows an inversely proportional relationship
O does not involve pressure changes
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Answer:
A) involves changes in temperature
Explanation:
The figure is missing, but I assume that the region marked X represents the region in common between Gay-Lussac's law and Charle's Law.
Gay-Lussac's law states that:
"For an ideal gas kept at constant volume, the pressure of the gas is directly proportional to its absolute temperature"
Mathematically, it can be written as
where p is the pressure of the gas and T its absolute temperature.
Charle's Law states that:
"For an ideal gas kept at constant pressure, the volume of the gas is directly proportional to its absolute temperature"
Mathematically, it can be written as
where V is the volume of the gas and T its absolute temperature.
By looking at the two descriptions of the law, we see immediately that the property that they have in common is
A) involves changes in temperature
Since the temperature is NOT kept constant in the two laws.
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All substances are matter but all matters are not substance. Matter is generally a loose term used in respect to a substance. Matter and substance are sometimes used for the same context, this is certainly not correct. Various examples have already proved that a matter will not always be a substance depending on its physical nature, but a substance is always a matter.
(cc/ to Taskmasters , I just switched it up a little bit.)
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Here is an image of the periodic table. Hope this helps.
Final answer:
By increasing atomic number, the Periodic Table organises elements in chemistry. Since groups of elements share comparable properties because they all have the same number of electrons in their outer shell, each row represents a period and each column represents a group.
Explanation:
Interpreting the Periodic Table involves understanding its structure and how the elements are arranged.Elements in the periodic table are ordered by increasing atomic number, which corresponds to the number of protons in an atom's nucleus. Each row represents a period and the columns represent groups. Because all members of a group have an equal number of electrons in their outermost shell, all members of that group share characteristics. For instance, the elements fluorine (F) and chlorine (Cl), which both belong to group 17, have seven electrons in their outermost shells and share other characteristics. The Periodic Table is an essential tool in the field of chemistry as it allows scientists to understand patterns and properties of elements.
Learn more about Periodic Table here:
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B.a homogeneous mixture and a suspension
C.a heterogeneous mixture and a solution
D.a heterogeneous mixture and a suspension
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Answer is: D.a heterogeneous mixture and a suspension.
Suspension is a heterogeneous mixture (solute particles do not dissolve), that contains solid particles (for example nickel sulfide or NiS) sufficiently large for sedimentation.
The internal phase (solid nickel sulfide) is dispersed throughout the external phase (water).
Another example of a suspension is sand in water.
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Attractive force of gravity is expressed by Isaac Newton viaWriting in the journal Philosophiæ Naturalis Principia Mathematica onJuly 5, 1687 in the form of the following formula:
F = G \ frac {M_1 m_2} {r ^ 2},
Where:
F is the force of gravity between the two masses,
G is the gravitational konstante,
m1 is the mass of the first object
m2 is the mass of the object, and
r is the distance between the two masses.
Thistheory is then developed further that any celestial body will be mutualattraction, and this could explain why the earth should revolve aroundthe sun to offset the attractive force of gravity of the earth-sun. Byusing the gravitational pull of this phenomenon as well, meteors closerto the Earth in its journey in space will be attracted fall to earth.
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Single: A + BC —> AC + B
Double: AB + CD —> AD + BC
Zn is you A, H is your B, C2H3O2 (Acetate) is your C.