The defining characteristic of an element is the number of protons in the nucleus. Copper always has 29 protons. It may have different numbers of neutrons, as in the common isotopes copper-63 and copper-65 which have 34 and 36 neutrons respectively.
The constant proportions - combining different substances into other substances always required the same proportions of each substances; in the case of gases, the numbers come in simple ratios. For example, 2 volume units of hydrogen + 1 volume unit of oxigen combine to form water.
no. an atom is made up of protons neutrons and electrons. protons have a charge of plus one electrons have a charge of minus one neutrons have no charge. therefore the number of protons and electrons must be equal (balancing the charges) for the atom to be neutral. ;)
The idea of atoms explains the conservation of matter. In chemical reactions, the number of atoms stays the same no matter how they are arranged. So, their total mass stays the same.
Dear questioner,As an answer to your question I should mention there are atoms which have the same number of protons but are considered different. These atoms are called Isotopes. Isotopes of an element have the same number of protons but the number of Neutrons are not the same. Isotopes have the same chemical virtues but in the physical virtues related to mass they are a bit different.
Isotopes are atoms of a given element that have the same number of protons but a different mass number and therefore a different number of neutrons.
To find the mass of copper containing the same number of atoms as 68.7 g of iron, we need to first calculate the number of atoms in 68.7 g of iron using its molar mass. Then, we convert this number of atoms to copper atoms using the ratio of their molar masses. Finally, we determine the mass of copper corresponding to this number of atoms.
All atoms have atomic numbers which are the same and the atoms have the same number of electrons.
In a sample of pure copper, all atoms have the same number of protons in their nucleus, which defines the element as copper. However, individual copper atoms may have varying numbers of neutrons, resulting in different isotopes of copper.
Yes, everything is made up of atoms, but the atoms in copper are all the same kind, just copper atoms, so it is an element.
Correct. Copper is made only of atoms that contain 29 protons in the nucleus.
False. When copper atoms and chlorine atoms combine to form copper chloride, the resulting substance will have different chemical properties compared to copper and chlorine individually. This is due to the new chemical bonds formed between the atoms, leading to a different chemical structure and behavior.
All atoms of the same element have the same number of protons, which is its atomic number. A neutral atom will have the same number of electrons as protons.
Compounds of zinc are white because zinc atoms do not absorb visible light in the same way that copper atoms do. Copper compounds have color because copper atoms absorb certain wavelengths of visible light, leading to the perception of color in the compound. This difference in electronic structure is responsible for the variation in color between compounds of zinc and copper.
i havent got an elements table in front of me but here is how you do it: figure out how many moles is 2.9 grams of copper by using molecular wieght, then simply multiply so: No of moles* No of atoms in one mole* number of electrons in one atom of copper (which is the same as the No of protons...)
The number of protons is identical in all atoms of an element.
Copper is precipitated from geothermal heat vents, And the atoms well colect the same over and over tell the copper material is large enough to see, though with small change`s in mineralization in the insolution the form of the copper well grow in many shapes and size`s.
Find the number of moles that 6.35 g of copper is. Copper's molecular weight is 63.55 g/mole 6.35g /63.55 g/mol = .0999 moles Now, my guess is this question is all about significant figures. It appears as though your teacher wants you to say "they have the same number of atoms" because .0999 moles, when you take into significant figures, is .1 moles. So .1 moles and .1 moles have the same number of atoms. So that's what my answer would be.