7th 1.3 Vocab

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7 questions

atom: the _______  of an element that has all the chemical properties of that element

_______  is made of atoms. Atoms are very small and cannot be seen using conventional microscopes. A grain of salt contains about _______  (1,200,000,000,000,000,000) atoms. Atoms consist of a _______  containing protons and often neutrons surrounded by _______ .

Latin root atomus meaning "_______"

chemical formula: a set of _______  used to describe the _______  within a substance

Table salt is composed of two elements in a 1:1 ratio: _______  (Na) and _______  (Cl). The chemical formula for salt is NaCl.

Chemical structure of _______

chemical symbol: the one- or two-letter representation of an _______ ; symbols are often derived from the Latin name of the element

Latin stem symbolum meaning “creed, token, _______ ”; Greek stem symbolon meaning “token, watchword”

From the Greek words _______  (water) and _______  (forming).

Simple images of the IUPAC _______  designation for elements

compound: a _______  that is formed when two or more different _______  combine; can usually be separated by _______  reaction

In solid form,_______  compounds likecommon salt (NaCl) form arrangements of ions called _______ . Figure (a) is a ball-and-stick model of NaCl, and figure (b) is a more realistic space-filling model, with cations in contact with anions.

element: a _______  that cannot be broken down into simpler substances by chemical reactions

_______  is an element.

The element _______  is precious for its lustre.

molecule: two or more _______  joined together

A molecule of _______  contains three atoms of oxygen. A molecule of _______  contains two atoms of hydrogen and one atom of oxygen. Similarly, a molecule of _______  contains one atom of nitrogen and three atoms of hydrogen.

polymer: a _______  that is made of _______  that are arranged in a repeating structure

From the Greek polymeres “_______.”

_______  is a polymer containing thousands of _______ .