Chemical Reactions
What is it called when two simple substances combine and form a single compound?
What is synthesis
What part of the atom is in the Nucleus?
What are Protons and Neutrons
What are the rows called
What are Periods
How many atoms are in 1 molecule?
what is 2 or more
How do you balance chemical equations?
You change the coefficients to make both sides equal
What is it called when a hydrocarbon reacts with oxygen gas to produce carbon dioxide and water?
What is combustion
What are Valence electrons?
What are the outer most electrons
How many elements are in the periodic table
What is 118
How are molecules different in Gases, Liquids and Solids?
gas is super spread out, liquid is more compacted and solids are close together.
how many rules are there for balancing chemical equations
5
What is the chemical called when it speeds up a chemical reaction?
What is a catalyst
An atom with an atomic number of 13 would have how many protons?
What is 13
How many families are in the Periodic Table
What is 9
What is a molecule?
What is a group of atoms bonded together.
can you change the subscripts of a chemical equation
no
What is the chemical reaction that the visual representation is showing? BC+A → B+AC
What is a single replacement reaction
If an atom has an atomic number of 13 and an atomic mass of 30 how many neutrons does it have?
What is 17
Who made the Periodic Table
Who is Dmitri Mendeleev
When were molecules discovered?
what is 1873
What does the arrow mean in the equation
Yields
One of the products is always water, precipitate or?
What is gas
How many parts are there in an atom?
What is 3
Who was the first person to ever discover a new element
Who is Hennig Brand
An oxygen molecule is formed by sharing how many electrons?
What is 2
How many atoms of each element are in the formula shown? 2Na2SO4
Na= 4 S=2 O=8