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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.

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12y ago

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Substance in which all atoms are alike?

A substance in which all atoms are identical is called an element.


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 for a given substance never change?

A substance's chemical composition, which is determined by the types and arrangement of its atoms, always remains the same regardless of physical or chemical changes that may occur.


Is a atomic change the same substance after it changes?

Yes, an atomic change involves rearranging the atoms of a substance to form a new substance. The new substance may have different properties than the original substance due to the change in atomic structure.


How can you use Dalton's atomic theory to explain why every sample of pure substance has the same properties?

Dalton's atomic theory states that elements consist of indivisible particles called atoms and that atoms of the same element are identical in size, mass, and properties. Therefore, every sample of a pure substance will have the same properties because each sample is made up of the same type of atoms arranged in the same way.


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.


What does not change when a substance changes matter?

The chemical composition of the substance does not change when it changes its state of matter. The arrangement of atoms and molecules may vary, but the elements present in the substance remain the same.


Is the solid state of water a Physical property or a chemical property?

When a substance changes states the chemical make-up of the substance is still the same, so the state of the substance would be a physical property.


What happens to the overall mass of a substance when it changes state?

The overall mass of a substance remains the same when it changes state. The mass is conserved during physical changes like melting, freezing, vaporization, or condensation. This is because the number of atoms or molecules in the substance does not change during a change in state.


What happens when a clear substnace undergoes a chemical change?

It is no longer that same substance. A chemical changes the identity of the substance. Individual atoms cannot be broken down into smaller parts by normal physical or chemical change.


What are Atoms of the same substance that have different number of neutrons?

istopes


What is a substance where all atoms have the same atomic number?

An element.