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Chemistry Test 2

Chapters 5-8; Labs 3,4

When chemicals interact with one anther they can be said to have reacted. true
When shared electrons are shared equally so that they spend about the same amount of time with each atom, the resulting atom is likely to be polar. true
A double bond is stronger than a triple bond. false
A diatomic molecule is one having two of the same kind of atom bound together. true
Halogens often form diatomic molecules. true
The lanthanoids (or lanthanides) are also called the rare earth metals. true
None of the actinoid (or actinide) series elements are radioactive. false
Polar molecules tend to dissolve readily in water. true
Atoms consist of a few particles moving about in mostly empty space. true
Atom Group Name of: 1A alkali metals
Atom Group Name of: 2A alkaline earth metals
Atom Group Name of: B groups transition metals
Atomic Group Name of: 3A to 6A post-transition elements
Atomic Group Name of: 7A halogens
Atomic Group Name of 8A noble gases
Symbol: Mg Element: magnesium
Symbol: Mn Element: manganese
Symbol: O Element: oxygen
Symbol: Cu Element: copper
Symbol: Fe Element: iron
Symbol: Au Element: gold
Symbol: Ag Element: silver
Symbol: Pb Element: lead
Symbol: K Element: potassium
Symbol: Na Element: sodium
name of molecule: CH4 molecular formula: methane
name of molecule: H20 molecular formula: water
name of molecule: CO2 molecular formula: carbon dioxide
name of molecule: O2 molecular formula: oxygen
name of molecule: C2H2 molecular formula: ethylene
A substance that can be readily shaped is said to be malleable
Semiconductors are found among the metalloids
Atoms on the far right- hand side of the periodic table that are completely satisfied with their number and arrangement of electrons. They are called the noble gases
An ion is an atom that bears a charge. A ion carrying a positive charge is called a cation
An ion carrying a negative charge is called an anion
Name two types of chemical bonding ionic and covalent
Which of these two types is the stronger ionic or covalent? covalent
In writing a chemical equation, the reactants are shown on the ?-hand side of the arrow and the products are shown on the ?-hand side. reactants on the left and products on the right
List four properties of metals 1. shine when polished 2. malleable & ductile 3. conduct heat 4. conduct electricity
Created by: jeni25