Classifying Matter
physical or chemical property/change
Inside the Atom
Density
Bohr/Lewis Diagram
100
Sugar
Pure Substance-Compound
100
All cooking/burning process result in ___________change.
Chemical
100
Which of the 3 subatomic particles have a negative charge ?
electrons
100
What are the two main components of density
Mass and Volume
100
Which diagram is the one with rings of electrons ? Bohr or Lewis
Bohr
200
Milk
Mixture (homogenous)
200
How many senses we can use to describe a physical change.
5 senses.
200
How can one calculate for the number of neutrons?
Atomic Mass Number - Atomic Number
200
If an object is floating on top of the water, its density has to be ___________than the water's density
lower
200
Which diagram is the one with only the valence (outside) electrons as dots? Bohr or Lewis
Lewis
300
mixture
300
Sugar dissolving in a glass of water.
Physical Change
300
Number of electron is always equal to _____
number of proton/Atomic Number
300
Find the density:
Mass = 30g
Volume = 10 mL
Density = ?
D= m/V
=30g/10mL
=3g/mL
300
How many valence (outside) electrons does Sulphur (S) have ?
6
400
Chicken Noodle Soup
Mixture--> Heterogenous mixture
400
Apple turning brown outside.
Chemical Change
400
Which subatomic particles are found outside the nucleus along the orbit of an atom?
Electrons
400
Find the density:
Mass = 450 g
Volume = 50 mL
Density = ?
D= m/V
= 450g/50mL
= 5 g/mL
400
How many total protons, electrons, and neutrons does calcium have ?
P=20
N=20
e = 20
500
Diamond
Pure Substance-Element
500
Physical or Physical Properties
Density
Physical Property
500
Which of the three subatomic particles (protons, neutrons, electrons) can be found inside the nucleus ?
Protons and Neutrons
500
Find the density:
Mass = 525 g
Volume = 5 mL
Density = ?
D= m/V
= 525g/5mL
=105 g/mL
500
How many valence (outside) electrons does chlorine (17-Cl) have ?
7