Atoms and molecules word search answers how to#

Furthermore, it is possible for atoms to bond together in identical proportions to form different molecules. It is possible for the same kinds of atoms to combine in different but definite proportions to form different molecules for example, two atoms of hydrogen will chemically bond with one atom of oxygen to yield a water molecule, whereas two atoms of hydrogen can chemically bond with two atoms of oxygen to form a molecule of hydrogen peroxide (H 2O 2). Thus hydrogen and oxygen may be present in any arbitrary proportions in mechanical mixtures but when sparked will combine only in definite proportions to form the chemical compound water (H 2O). It is this feature that distinguishes chemical compounds from solutions and other mechanical mixtures. The ratio of the numbers of atoms that can be bonded together to form molecules is fixed for example, every water molecule contains two atoms of hydrogen and one atom of oxygen. When two hydrogen atoms are bound to an oxygen atom, the outer electron shell of oxygen is filled. A single oxygen atom contains six electrons in its outer shell, which can hold a total of eight electrons. Polymer molecules may contain many thousands of component atoms.Ī water molecule is made up of two hydrogen atoms and one oxygen atom. Molecules containing more than two atoms are termed polyatomic molecules, e.g., carbon dioxide (CO 2) and water (H 2O).

If the two atoms are identical, as in, for example, the oxygen molecule (O 2), they compose a homonuclear diatomic molecule, while if the atoms are different, as in the carbon monoxide molecule (CO), they make up a heteronuclear diatomic molecule. Diatomic molecules contain two atoms that are chemically bonded. Thus, from a structural point of view, a molecule consists of an aggregation of atoms held together by valence forces. If this interaction is such that the total energy of the system is lowered, then the atoms bond together to form a molecule. When atoms approach one another closely, the electron clouds interact with each other and with the nuclei. You may know that elements make up the air we breathe and the water we drink, but do you know more about them? What element is almost as light as hydrogen? What do you call a blend of two chemical elements? Find out the answers in this quiz.Ītoms consist of a single nucleus with a positive charge surrounded by a cloud of negatively charged electrons.

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Atoms and molecules word search answers how to#

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