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Are all atoms of a given element identical to one another and different from atoms of other elements?
No. Some may have different numbers of neutrons. Atoms of the same element (atoms with the same number of protons in the nucleus) may have different numbers of neutrons, and so will have different masses. As an example, chlorine is a mixture of different isotopes with some of the atoms having different neutrons numbers.
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When an element is combined to another element the substance is what?
When an element is combined with another element, the resulting substance is called a compound. Compounds are formed through chemical reactions where atoms of different elements bond together to form a new substance with unique properties.
Why do different elements have different properties?
Different elements have different properties because of the arrangement of electrons in their atoms. The number of protons in the nucleus determines the element's identity, while the arrangement of electrons determines its properties. Factors like atomic structure, electron configuration, and bonding behavior contribute to the unique characteristics of each element.
Not all of Daltons rules were completely true as scientists later learned Matter is made of atoms and different elements are made of different atoms But not all atoms of a particular element are?
Dalton's atomic theory proposed that all atoms of a particular element are identical, which we now know is not entirely true. Isotopes are atoms of the same element with different numbers of neutrons, leading to variations in atomic mass. This discovery challenged Dalton's rule of identical atoms for a given element.
What is a chemical reaction in which one element replaces another in a compound or in which two elements in different compounds trade places?
It is called a "Replacement" Reaction.
What is an elment?
An element is a substance composed of atoms with the same number of protons in their nucleus. Elements are the building blocks of matter and are arranged on the periodic table based on their properties. Each element has its own unique chemical symbol.
What isotopes of uncharded elements have different numbers?
The atomic number of the isotopes of an element is identical; the mass number is different.
What do all elements have in common?
All elements have a specific signature, whereby one element is exactly different from another element.
Could two isotopes of an element have different number of protons?
yes, protons affect which element an atom is. Each isotope of different elements has generally a different number of neutrons. Isotopes with the same neutron number are called isotones.
What is the same about isotopes of the same elements?
The isotopes of the same element have an identical number of protons and electrons; the number of neutrons is different.
Are beryllium atoms identical?
Each atom of an isotope of beryllium (or of another element) is different from the atoms of an other isotope. But all the atoms of an isotope are identical.
What are the subsets of a pure substance?
An element and compound. Element- A group of atoms with identical proton numbers, Compound- 2 or more DIFFERENT elements chemically held together.
What makes element different from one another?
The atoms of each element have a number of protons that is unique to each element. The number of protons makes one atom different from another.
Can the spectral lines for two different elements be identical?
No, the spectral lines of two different elements are unique and vary based on the electron configuration and energy levels of each element. This is how scientists can identify and differentiate between different elements based on their unique spectral signatures.
What are elements and what make them different from one another?
Elements are pure substances that cannot be broken down by chemical means. The atoms of each element have a number of protons that is unique to each element. The number of protons makes one atom different from another.
Describe how compound is different from an element?
A compound is made up of two or more elements.
How are isotops different from regular elements?
Isotopes are atoms of the same element with different numbers of neutrons. Some elements have more than one isotope and some don't. The isotopes of an element are chemically identical, they just differ in mass. There is nothing special about any particular isotope, elements with them are just as 'regular' as the few which don't.
Which scientist speculated that atoms of the same element are identical to one another?
This is one of John Dalton's four postulates in his Modern Atomic Theory of Matter.
