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Why did John Dalton think that elements are made of single atoms?
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.
A neutral atom has the same number of protons as it does neutrons?
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. ;)
How does the idea of atoms explain the priciple of conservation of matter?
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.
Why do all atoms have a different number of protons?
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 that have the same number of protons but a 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.
What mass of copper contains the same number of atoms as 68.7 g of iron?
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.
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.
Is a sample of pure copper all atoms have?
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.
Is copper an element which is made up of atoms?
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.
If a reaction starts with 4 Cu atoms 5 O atoms and 10 H atoms what is known about the productsg?
In a reaction involving 4 copper (Cu) atoms, 5 oxygen (O) atoms, and 10 hydrogen (H) atoms, the specific products depend on the type of reaction occurring. However, since copper typically forms compounds with oxygen (like copper oxides) and can also react with hydrogen (to produce copper and water), one can infer that the products will likely include copper oxide and possibly water. The conservation of mass dictates that the total number of atoms of each element must remain the same in the products as in the reactants.
Is copper only made up of certain types of atoms?
Correct. Copper is made only of atoms that contain 29 protons in the nucleus.
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. 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.
What is the mass of copper if it contains same number of atoms as present in 3.2 grams of sulphur?
To find the mass of copper containing the same number of atoms as in 3.2 grams of sulfur, we first determine the number of moles of sulfur. Sulfur has a molar mass of approximately 32 g/mol, so 3.2 grams corresponds to 0.1 moles of sulfur. Since copper (Cu) has a molar mass of about 63.5 g/mol, the mass of copper that has the same number of moles (0.1 moles) is calculated as 0.1 moles × 63.5 g/mol = 6.35 grams. Therefore, the mass of copper is 6.35 grams.
What must atoms of the same element have?
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.
Why are compounds of zinc white but compounds of copper have color?
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.
How many electrons in 2.9 grams of 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...)
Which of the atoms in the table are atoms of the same element?
To determine which atoms in a table are of the same element, you would look for atoms that have the same atomic number, as this identifies the element. Atoms of the same element will also have the same number of protons in their nucleus. If isotopes of an element are present, they will have the same atomic number but different mass numbers due to varying numbers of neutrons.
