Counting atoms
This compound has 2 carbon and 1 oxygen atom
What is CO2 or carbon dioxide
The formula for this property is mass/volume.
What is Density
This chemical property of matter is defined as the ability to burn
What is flammability?
TRUE or FALSE: Elements cannot be broken down into smaller substances
TRUE
Always has the exact same composition and properties
PURE SUBSTANCE
There are this many molecules in 2H2
This ability of a substance to dissolve in a liquid
what is solubility?
This is a substance that can harm to the proteins of our bodies
NaCl is an example of what type of pure substance?
What is a compound
Pure Substances include these two types of substances.
What are ELEMENTS or COMPOUNDS
There are this many atoms are in 3O2
What is 6?
This property is found in metals and it is the ability to be shaped or flattened into sheets
What is malleability?
This property is when iron reacts with oxygen and produces a brownish color.
what is rusting?
Elements are found on the
PERIODIC TABLE
These pure substances CAN be broken down chemically, but not physically.
What are compounds?
There are this many atoms in the compound H2SO4
What is 7?
What is the test to determine which is harder based on which one scratches the other?
HARDNESS
When the copper in the Statue of Liberty reacted with Oxygen in the air, it changed color.
What is tarnish?
TRUE or FALSE: All compounds are molecules but not all molecules are compounds
TRUE
Concrete is this type of mixture
What is Heterogeneous?
In the following compound, there are this many atoms of Oxygen: 3Al2O3
What is 9?
The temperature at this a liquid turns into a gas
What is boiling point?
These properties can only be observed during a chemical reaction.
What are chemical properties?
All atoms have these three particles.
Protons, neutrons and electrons
This is a property of homogeneous mixtures.
What is that they are the same throughout?