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All atoms have atomic numbers which are the same and the atoms have the same number of electrons.
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∙ 12y ago
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Is copper made up of more than one element?
Yes, the metallic copper is an element, this means 'of one kind of atoms', it is Cu with atom number 29 in the periodic table. A 'copper' (money piece) is not made of pure copper, it is an alloy, the same like a 'nickel'.
A 10g sample of the compound copper oxide contains 2.0 g of oxygenWhat mass of oxygen would a 30 g sample of the same compound contain?
it has 6 gram of copper
Which pair of atoms form a pure covalent bond?
Two atoms of the same element and mass number.
Which sample contains the greatest number of atoms a sample of Al that contains 8.18E plus 23 atoms or a 5.16 mole sample of S?
Which sample contains the greatest number of atoms. A sample of Al that contains 8.18E+23 atoms or a 5.16 mole sample of S?The sample of______ contains the greatest number of atoms.Answer:In order to compare the two samples, it is necessary to express both quantities in the same units. Since the question was phrased in terms of atoms, it is convenient to convert moles of S to atoms of S.The conversion factor between atoms and moles is Avogadro's number: 6.02 x 1023 "things" / molTo convert 5.16 moles of S to atoms of S:atoms S=5.16 mol S6.02 x 1023 atoms S= 3.11E+24 atoms S1 mol SMultiply by atoms per mole. Moles cancel out.The sample of Al contains 8.18E+23 atoms.Since 3.11E+24 is larger than 8.18E+23, the sample of S contains the greatest number of atoms.
What is the definition of pure substances?
A pure substance is a substance that consists solely of the same atoms/molecules.So a volume of water that contains only H2O is a pure substance. A block of iron that contains only Fe atoms is pure substance. A pure substance can be composed of atoms or molecules as I said before BUT they have to be exactly the same.A substance that has constant chemical composition and characteristics
What is a pure sample of atoms that are all the same known as?
a element is a pure substance
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 substance made of copper atoms and chlorine atoms combined together will have the same chemical properties as copper and chlorine individually true or false?
False.
Is copper made up of more than one element?
Yes, the metallic copper is an element, this means 'of one kind of atoms', it is Cu with atom number 29 in the periodic table. A 'copper' (money piece) is not made of pure copper, it is an alloy, the same like a 'nickel'.
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.
Is a compound same through out?
A sample of a pure compound consists of the same molecules throughout its mass.
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.
