Chapter 7 Test Flashcards
Icm3 = ?
1mL
Icm3 =
1cm x 1cm x 1cm
Anything that has mass and takes up space can be considered as?
matter
Also known as the building blocks of matter, these tiny particles are 1,000,000 times smaller than the width of a human hair
atoms
If you were to investigate the nucleus of an atom, you would most likely find?
Neutrons and Protons
Matter with a composition that is always the same would be expected in a
substance
Iron, calcium, and carbon are all examples of?
elements
In order for a substance, containing two or more atoms of different elements, to be considered a compound, the atoms must be?
chemically combined
What would you call H20 and CO2?
compounds
Carbon -14 is an example of an?
isotope
H2O and CO2 are both examples of a?
compound
A ceasar salad is a great example of a?
heterogeneous mixture
When you mix a powdered drink like Gatorade with water, the mix is being referred to as the?
Solute
What is the ability of an object to be dissolved?
solubility
Which best classifies physical properties?
size dependant and size independent
What formula do we use to determine density?
mass/volume
name a size dependant property
volume
name a size independent property
melting point
What is another word for homogeneous mixture?
solution
What would be a good example of a physical change?
ice melting into a pool of water
When you have a physical change you will never end up with
a new substance
adding thermal energy to matter may cause
the state to change
the boiling point of matter is the point at which
a liquid becomes a gas
what do we call it when a gas becomes a liquid?
condensation
freezing and melting are reverse properties, but they occur…
at the same temperature
The law of conservation of mass
when the mass stays the same from the physical change of matter
which never changes during a physical change?
total mass
what is a good example of a chemical property?
ability to burn
when a small tree branch decomposes in a forest, this is an example of?
a chemical change
which signs show there is proof chemical change is happening?
the formation of a new substance
common things to see when a chemical change is happening are?
bubbles
when atoms collide and rearrange and bond into new combinations you have?
a new substance
what do we call the substances on the left side of a chemical equation before the reaction occurs?
reactants