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Phy Sci Ch 6 The structure of Matter

Teacher: Mr. Mac
Across
An organic compound that is made of one or more chains of amino acids and that is a principal component of all cells
A chemical formula that shows the number and kinds of atoms in a molecule, but not the arrangement of the atoms. Example: Formaldehyde CH2O acetic acid C2H4O2 and glucose C6H12O6
A covalently bonded group of atoms that has a positive or negative charge and acts as a unit Example: NaHCO3 Sodium Hydrogen Carbonate (Baking Soda) HCO3- is the polyatomic ion
A chemical bond that involves sharing a pair of electrons between atoms in a molecule Example: H2O
The method atoms in a compound are bonded. It represents the structure of a compound.
A food group which can be broken down to glucose to provide energy. Example: Pasta
the angle formed by two bonds to the same atom
The building blocks of protein which is obtained from the foods we eat.
A chemical bond formed when one or more electrons are transferred from one atom to another. Example: NaCl
Down
A long molecule consisting of many similar or identical building blocks linked by covalent bonds Example: Polyethene
A covalent bonded compound that contain carbon Example: glucose C6H12O6
a chemical formula showing the ratio of elements in a compound rather than the total number of atoms Example: H2O shows a ratio of 2 to 1
An attractive force that holds together the atoms, ions, or groups of atoms in a molecule or compound.
A bond formed by the attraction between positively charged metal ions and the electrons around them. The electrons have freedom of movement between the atoms because their outermost energy level overlap. Example: Copper
The average distance between the nuclei of two bonded atoms