States of Matter
Name the three main states of matter.
Solid, liquid, gas
Is tearing paper a physical or chemical change?
What is the term for substances on the left side of a chemical equation?
reactants
What element does "C" represent in the periodic table?
carbon
What type of bond involves sharing valence electrons?
What type of change does water undergo when it freezes? (Physical or chemical)
Physical
What type of change makes a new substance? (physical or chemical)
Chemical
What is the term for substances on the right side of a chemical equation?
reactants
What is the structure of a chemical equation? ( ____ + ____ ---> _____ + _____)
Oxygen is in group 16 on the periodic table. How many valence electrons does it have?
6
Which state of matter has a definite shape and volume?
Solid
What is the chemical formula for water?
H2O
chemical
CO2
These are the outermost electrons that orbit the nucleus of an atom
What is the process of gas turning into liquid called?
Condensation
What are two signs of a chemical reaction?
What happens to bond during a chemical reaction?
bonds break and form new ones
How many oxygen atoms are in the following chemical formula? C2H12O11
11
How many total valence electrons are shared in a triple covalent bond?
6
What is it called when something changes directly from a solid to a gas?
Sublimation
Burning wood is a _______ change.
How do particles move in a solid?
vibrate in place
What side of a chemical equation are reactants on?
left
Atoms are unstable if they have ____ to ____ total valence electrons.
1 to 7