atomic structure Flashcards
What is the definition for an Element?
A substance which are made of only one type of atom.
What is the definition of a compound?
A substance which is made up of more than one atom, and are formed from elements by chemical reactions.
What is copper sulfate + sodium hydroxide?
sodium sulfate + copper hydroxide
What does it mean if a compound ends in –ide?
Contains 2 elements; usually metal and non-metal.
What does it mean if a compound ends in –ate?
Contains 3 or more elements, 1 of which is always oxygen
What does a chemical reaction involve?
The formation of one or more new substances; usually with an energy change.
Why is it difficult to separate a compound?
In a compound, elements are chemically joined together
How are elements arranged in the modern periodic table?
Increasing atomic number.
What are the columns of the periodic table called?
Groups
What are the rows of a periodic table called?
Periods
What does the column an element is in tell you about the atoms?
The number of electrons in outer shell
What does the row an element is in tell you about the atoms?
Number of electron shells
What are the elements in Group 0 called?
Noble gases
What are the elements in Group 1 called?
Alkali metals.
What are the elements in Group 7 called?
Halogens
