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a element is a pure substance
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∙ 14y ago
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In a sample of pure copper all atoms have the same what?
All atoms have atomic numbers which are the same and the atoms have the same number of electrons.
Are all sample of elements are composed of atoms with same atomic mass?
All atoms in a pure sample of one element have the same mass. The atoms in a different element have a different mass. Different atoms is what makes different elements.
What is a pure stubstance?
a pure substance is that which contains same atoms or same molecules..
Why is a sample of matter considered a pure substance?
A pure substance is either an element or compound. Elements are composed of only one kind of atom, and compounds are composed of a definite proportion of atoms of different elements that is always the same.
What is a pure substane?
Every atom or molecule in your sample is the same.
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 are atoms with the same atomic number and same chemical properties in their purest form?
pure elements such as gold or helium any pure group of atoms of the same type are simply a mass of that element
Is a compound same through out?
A sample of a pure compound consists of the same molecules throughout its mass.
Is sodium hydroxide a pure substance?
Cobalt is an element. Atomic number 27, Atomic weight 58.9. This means if you have a sample of 100% cobalt (no impurities) all the atoms are the same, cobalt atoms. So yes, cobalt is a 'pure' substance in that it is not a mixture of materials.
What does it mean when something is a pure substance?
A pure substance is an element or a compound. In the case of an element, it is composed of all the same kind of atoms. In the case of a compound, the atoms of the elements are chemically bonded in definite proportions, meaning that all samples of the same compound are chemically the samel.
Which pair of atoms form a pure covalent bond?
Two atoms of the same element and mass number.
What is the characteristic of a pure substance?
The defining characteristic of a pure chemical substance is that any sample of it contains the same elements in the same mass proportions to one another.
