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ELEMENTS AND ATOMS
ATOMS & BONDING KEY TERMS
IONIC BONDS
COVALENT BONDS
PERIODIC TABLE
100
The building blocks of matter.
What is an element?
100
electrons in the highest energy level and determines the properties of an element.
What is valence electrons?
100
An atom that loses an electron, it loses a negative charge.
What is a positive ion?
100
When two atoms share electrons and forms usually between atoms of non-metals.
What is a covalent bond?
100
the number of protons in the nucleus of an atom.
What is an atomic number?
200
a pure substance made of two or more elements that are combined chemically in a specific ratio.
What is a compound?
200
a scientist used to predict the future behaviors of atoms.
What is a periodic table?
200
An atom that gains an electron, it gains a negative charge.
What is negative ion?
200
Elements that share similar properties.
What is a group or family?
300
it is an element or a compound, or both that are in the same place but are not chemically combined.
What is a mixture?
300
a symbol for the element that surrounded by dots.
What is an electron dot diagram?
300
the attraction between two oppositely charged ions.
What is ionic bond?
400
a force of attraction that holds two atoms together as a result of rearrangement of electrons between them.
What is a chemical bond?
400
the number of sodium ions needed to form sodium phosphate in an ionic compound.
What is three sodium ions?
400
These group have eight valence electrons and they do not react with other elements.
What are noble gases?
500
Water is a compound. What are the elements that water contains and many atoms are there for each element?
What is Hydrogen and Oxygen?
500
the number of valence electron of Helium?
What is 8 valence electrons?
500
Name 3 properties of ionic compounds.
1. What is hard? 2. brittle 3. high melting points
500
Name 3 trends in the periodic table.
1.The atomic number increases from left to right and top to bottom. 2. The atomic mass increases from left to right and top to bottom. 3. The reactivity of elements from left to right it becomes less reactive and more stable. Top to bottom becomes more reactive.