Intro to Matter
Anything that has mass and takes up space
Matter
Observed and measured without changing the substance
physical property
Protons have a:
Neutrons have a:
Electrons have a:
positive, neutral, negative
Packed tightly and vibrate in place
solids
You use this to find volume of an irregular object
Water Displacement or a graduated cylinder
rusting, tarnishing, and flammability are examples of:
Chemical properties
The atomic number of an element represents:
The number of protons in the nucleus
slide past one another and move freely
liquids
This is used to find mass
balance
Types of pure substances
elements and compounds
This is the largest class of elements
metals
have no definite shape or volume
gas
What is the density of an object that is 96g and has a volume of 3cm cubed.
32g/cm cubed
Types of heterogeneous mixtures
suspensions and colloids
This class appears along a zigzag and have properties of metals and non metals
Metalloids
what physically has to happen for dry ice to sublimate
gain a lot of energy and bonds/attraction break
If I weigh 180 lbs on earth, how much would I weigh on the moon?
30lbs
Why is a solution homogeneous
It is dissolved and is uniform throughout.
the atomic number of barium is 56 and mass is 137. Find the number of subatomic particles in barium
Protons 56, electrons 56, neutrons 81
Atoms have mass and take up space. What is the third property of all atoms?
They are constantly in motion