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elements and atoms

Horizontales
A substance that contains 2 or more elements chemically combined.
The number of neutrons in iodine 127.
When atoms are held together/form a compound by sharing electrons. (8,4)
Atoms of an element with the same number of protons but different mass numbers.
Show how many atoms of each element a covalent compound has. (9,7)
An element with twenty nine electrons
This states that atoms tend to want to achieve a complete outside shell of 8 electrons. (5,4)
Elements that tend to form covalent bonds (3,6)
Bond formed between a metal and a nonmetal
A uncharged particle in an atom.
Verticales
A neutral group of atoms joined together by covalent bonds.
Locations around the nucleus where electrons are found. (6,6)
A number equal to the number of electrons which might be gained or lost to make a stable ion from an atom. Gives a measure of the "combining power" of the atom.
The number representing the number of protons and electrons in an atom. (6,6)
The amount of neutrons in strontium 88
Total number of protons and neutrons in an isotope (4,6)
The smallest particle into which an element can be subdivided without changing its properties.
Particles found orbiting the nucleus.
Positively charged particle in the nucleus
How many protons are in an isotope of chlorine
An element with 16 protons