Elements
A pure substance that cannot be separated into simpler substances by physical or chemical means
What is an element
How can you tell how many elements are in a compound?
Count the Capital Letters
Rows on the periodic table are called _______
Columns on the periodic table are called _______
Who created the periodic table _____________
What is periods, groups and Dimitri Mendeleev
Anything that has mass and takes up space
What is matter
An element that is shiny and that conducts heat and electric current well
What is a metal
Two or more atoms chemically bond together is a _________________
What is a molecule
Na2CO3
How many elements?
3
How are elements in the same group similar?
They all have the same number of electrons in their outer shell and share similar properties
The smallest particle of matter
What is an atom
Elements that have properties of both metals and nonmetals
What metalloids
There are three oxygen bond together, this is considered a ____________ _____________.
What is elemental molecule
The chemical formula NaCl is used for table salt. This formula represents a______________.
What is a compound
How are elements in the same period similar?
They all have the same number of orbital shells
True or False: Matter is anything made up of atoms and molecules.
What is true
The ability of matter to be hammered into a thin shape Ex: aluminum foil; paper clip
What is malleable
The symbols Ba, K and Na represent which three elements?
What is Barium, Potassium and Sodium
Symbols and the number of atoms of each element in a compound in written form is known as
Example : CH4
What is a chemical formula
The periodic table is split in to what three groups?
Which group contains the most amount of elements?
What is metals, metalloids and non-metals
What is the metals
The three most familiar states of matter
What are solids, liquids and gases
These elements tend to be brittle and dull in color
What nonmetals
How many atoms are in the molecule C6H8ON2(BaSi)4
What is 25
What is the chemical formula for a common household product?
What is NaCl salt, NH3 windex, NaClO bleach, NaHCO3 baking soda
Which two groups on the periodic table are the most reactive and why?
What is The alkaline metals (group 1) and the Halogens (group 17) They are the most reactive because they either want to give or receive one valence electron.
True or False: Matter cannot be created or destroyed, it merely changes form.
What is True.
This nonmetal is located alone (surrounded by metals) on the left side of the periodic table
What is Hydrogen