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A substance whose atoms are all the same kind is called an element. Elements are the simplest form of matter and cannot be broken down into simpler substances by chemical means. Each element is defined by its unique number of protons, known as its atomic number, and can exist in various forms, including gases, liquids, and solids. Examples include hydrogen (H), oxygen (O), and carbon (C).
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What is a substance whose atoms all contain the same number of protons and electrons?
compound
A substance whose atoms all contain the same number of protons and the same number of electrons are?
An element is a substance whose atoms all contain the same number of protons and the same number of electrons. The number of protons in an element's atom determines its atomic number and defines its chemical identity.
What are the two elements of magnesium?
If you have pure magnesium, then the two atoms that compose the substance are going to be magnesium atoms. Magnesium is an element, a pure substance composed of all the atoms of the same kind. It is not to be confused with a compound which is made up of two or more atoms of different elements.
How does a molecule and atom differ in meaning?
A molecule is 2 or more atoms clinging together in some fashion. The molecule can be simple, that is, the same substance as the atoms, or it can be compound, that is, the atoms are different, and are of a different substance as the atoms.
Single kind of matter that is pure?
An element is a single kind of matter that is pure. It consists of atoms with the same number of protons in their nucleus. Examples of elements include oxygen, gold, and carbon.
What is a substance whose atoms are all the same kind?
molecule
Substance in which all atoms are alike?
A substance in which all atoms are identical is called an element.
What is a substance whose atoms all contain the same number of protons and electrons?
compound
A substance whose atoms all contain the same number of protons and the same number of electrons are?
An element is a substance whose atoms all contain the same number of protons and the same number of electrons. The number of protons in an element's atom determines its atomic number and defines its chemical identity.
When all atoms in a substance are alike the substance is a?
When all atoms in a substance are alike, the substance is an element. Each element is composed of atoms that have the same number of protons in their nucleus.
What is a pure substance made up of the same kind of atoms called?
This describes an element. There are over a hundred elements in the physical world, and they are all categorized in the periodic table.
What is the substance made up of atoms?
All substances are made up of atoms. Atoms are the basic building blocks of matter and are composed of protons, neutrons, and electrons. These atoms combine to form molecules, which make up different substances.
What is a pure substance - all the atoms have the same atomic number or number of protons?
A pure substance in which all the atoms have the same atomic number or number of protons is an element.
Are the atoms in a substance the same if the substance changes states?
On heating there will be a change in the physical state not chemical composition. So the number of atoms will be the same even after change in state.
What are the two elements of magnesium?
If you have pure magnesium, then the two atoms that compose the substance are going to be magnesium atoms. Magnesium is an element, a pure substance composed of all the atoms of the same kind. It is not to be confused with a compound which is made up of two or more atoms of different elements.
The si base unit used to measure the amount of a substance whose number of particles is the same as the number of atoms of carbon in exactly 12 g of carbon-12?
Mole
Type of matter whose atoms are all the same?
Elements
