Physical & Chemical
Salt dissolving in water
What is a physical change?
Lithium
What is element?
Positively charged particle
What is proton?
Horizontal rows on the periodic table are called
What is periods?
These are found on the left hand side of the yield sign; they are what go into a chemical reaction
What are reactants?
A bicycle changes color as it rusts
What is a chemical change?
Carbon dioxide
What is compound?
Particle found outside of the nucleus
What is an electron?
The nonreactive group on the Periodic table
According to the law of conservation of mass, the reactants and products are....
What is equal?
True/false: Evaporation is a physical change
What is true?
Air
What is mixture?
Type of particle that determines the reactivity of an element. (Be specific)
Hydrogen & oxygen react chemically to form water. How much water would form if 10 grams of hydrogen react with 12 grams of oxygen?
What is 22 grams?
Flammability is what type of property?
What is chemical property?
Mixtures that are uniform and are known as a solution
What is Homogenous?
The atomic number tells you the number of
What is protons?
These elements are good conductors of electricity, malleable, and ductile.
What are metals?
A system must be this in order to follow the law of conservation of mass.
What is closed system?
The solid material that may form when combining two liquids.
What is a precipitate?
Mixtures that are not uniform; you can see the different parts
What is Heterogenous mixture?
The atomic mass is the combinations of these two particles
What are protons and neurtons?
These elements are semi-conductors
What are the metalloids?
5 g Mg+ ______g O---> 26 g MgO
What is 21 grams?