States of Matter
What are the building blocks of Matter?
Atoms
Name 2 signs a chemical reaction has taken place.
odor, gas, change of color
What are 2 types of pure substances?
element and compound
The atomic mass =
protons + neutrons
Mass is neither _____ or _____.
created or destroyed
Takes shape of container with no fixed volume.
Gas
Density and volume are characteristics of a physical or chemical property?
Physical
Can a compound be broken down further? if so chemically or physically?
yes, chemically
electrons and ______ are the same number
protons or atomic number
What is a closed system of Law of Conservation?
both sides equal, balanced
Has a fixed shape and a fixed volume
solid
Flammability and combustibility are examples of?
Chemical properties
what are the 2 types of mixtures?
homogeneous and heterogeneous
atomic number tells you the number of what 2 things?
# of electrons and protons
What is an open system of Law of conservation?
reactant is more than product, unequal
Takes place of its container and has a fixed volume.
Liquid
Melting and boiling point are examples of?
Physical properties
Homogeneous
How many electrons can the 1 shell hold?
2
2CH2 + 02 > C2H4O2I
Is this balanced?
opened or closed?
yes
closed
Particles ______ when heat is removed.
slow down
If water is 1g and I place a ball weighing .2g will the ball sink or float?
sink
Can mixtures be separated? physically or chemically?
yes, physically
Where is the valance electron shell located?
outer most shell
H2Fe3 + Na2 > NaH2Fe3
Is this balanced?
opened or closed?
no
open