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word "atom" is used for a single element
water is not an atom , it's a molecule which is made by the combination of atom when they reat with each other
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∙ 13y ago
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Can you say that atoms cannot be changed?
Atoms consist of a nucleus and electrons surrounding the nucleus. You can not change the nucleus by ordinary chemical means but you can remove electrons. However, since the electrons are easily replaced the atom is not considered fundamentally changed by removing electrons, but it is changed. There is a way to change a nucleus that's called "neutron activation" . This involves bombarding the nucleus with slow moving neutrons and letting the nucleus adsorb a neutron. This makes the atom a little heavier and can sometimes make the atom radioactive. Neutron activation is not considered a chemical process but it is a way to change the atom. So I would say it is incorrect to say an atom cannot be changed. Atoms can be changed but its not easy.
How many helium atoms does water contain?
Water has no helium (He) atom. Chemically water is H2O and there is no He atom present in water.
What type of atoms are found in the nucleus of an atom?
The nucleus of an atom CANNOT itself contain atoms.
What is an atom and what are they made of?
An atom is a unit of matter that cannot be split into other atoms. It is made of energy.
Can there be more than the 3 main atoms in water?
Water's molecular composition is H20 which is 2 hydrogen atoms and 1 oxygen atom. The molecular composition cannot change for if it did it would be a different substance.
Can an element undergo a decomposition reaction?
yes.example:H2O ---> H2 + Othis can be done by electrolysis if you want to decompose water into hydrogen and oxygen.ANS2:An element, that is to say, an uncombined atom, cannot chemically decompose further but, elements that were combined initially can participate in a decomposition reaction. The example given in the first answer describes the decomposition of a compound, water.
What is smallest particle into which an element can be divided and still have the properties of that element?
an "element" can be divided until it reaches a single atom. But a "molecule" can only be divided until it is a single molecule. For instance, water, H2O, is usually present in the millions to look like water. However, if you divide it up into smaller and smaller portions, say halves, you can only divide it until you have 2 Hydrogens and 1 Oxygen. If you divide it further, it is no longer water. It will become something else.
What is atom in a sentence?
Sometimes, an atom cannot be split.
Smallest unit of matter that cannot be broken down?
Higgs Bozon.
Is water an atom or a element?
No water is NOT an "atom". No water is NOT an "element".
Which cannot be seen?
Atom
Can you say that atoms cannot be changed?
Atoms consist of a nucleus and electrons surrounding the nucleus. You can not change the nucleus by ordinary chemical means but you can remove electrons. However, since the electrons are easily replaced the atom is not considered fundamentally changed by removing electrons, but it is changed. There is a way to change a nucleus that's called "neutron activation" . This involves bombarding the nucleus with slow moving neutrons and letting the nucleus adsorb a neutron. This makes the atom a little heavier and can sometimes make the atom radioactive. Neutron activation is not considered a chemical process but it is a way to change the atom. So I would say it is incorrect to say an atom cannot be changed. Atoms can be changed but its not easy.
Something which cannot be seen?
Atom
Why is oxygen in the water molecules?
Water is made of two hydrogen atoms and an oxygen atom. The combination of hydrogen and oxygen is needed in order to create a molecule with the properties characteristic of water. Water cannot exist without oxygen.
How many helium atoms does water contain?
Water has no helium (He) atom. Chemically water is H2O and there is no He atom present in water.
What word means cannot be divided?
atom
What atom form water?
You have 2 hydrogen and one oxygen atom, which is why water is H2O
