MATTER
What state of matter has the atoms most tightly packed together?
Solids
Explain the difference between qualitative and quantitative properties.
Qualitative properties are explanation of characteristics using words
Quantitative properties are explanations of characteristics using number
What are the three main subatomic particles?
Proton, neutron and electron
What does the atomic number of an element represent?
How many protons the element has
What is the number of electrons in oxygen?
Relevant information:
Atomic number = 8
Atomic mass = 16
8
What is all matter made of?
Atoms
What type of property is melting point?
Physical Property
What is the center of an atom called?
Nucleus
What are the vertical columns of the periodic table called?
Familes/Groups
FREE SPACE
Enjoy your free points
What is the commonly forgotten about 4th state of matter? (worth double points if you can explain what that state is)
Plasma
State in which all atoms are ionized (electrons not orbiting one nucleus)
Explain the difference between physical and chemical change?
Physical change: Change in matter that does NOT alter the chemical composition
Chemical change: Change in matter that DOES alter the chemical composition
What are subatomic particles made of?
Quarks
What are the horizontal rows of the periodic table called?
Periods
What does the law of conservation of mass state?
Atoms cannot be created or destroyed
Mass reactants must be the same as the mass of the products
What state of matter would be described as having a fixed volume but a variable shape?
Liquid
Quick Calc! (15sec)
What is the density of an object that has a volume of 10cm3 and a mass of 5g?
0.5g/cm3
Must include units!
Name 2 different scientist who developed different atomic models and provide a basic explanation of their model.
Dalton, Thomson, Rutherford, and Bohr.
Would also accept Schrodinger but did not talk about this model as much.
Name 2 special families of elements that have distinct names.
Alkali metals
Alkaline earth metals
Halogens
Noble gases
Name two key points of the kinetic molecular theory.
1)All matter is made up of very small particles
2)The particles exist in empty space
3)The particles are constantly moving
4)Energy makes particles move
Name 4 types of changing of states of matter
Melting, Freezing
Vaporization, Condensation
Sublimation, Deposition
What are two examples of chemical reactivity properties?
Many options. Ones covered in class are:
- reactivity with acids
- reactivity with oxygen
- combustibility
- lack of reactivity
The word "atoms" comes from the Greek work "atomos". What does atomos mean?
Uncuttable or indivisible
Why do we not include or care about electrons when counting the atomic mass of an element?
Mass of the electron is so small in comparisons to protons and neutrons that it is negligible.
How many students in our class have a name that starts with a vowel? You have 10 seconds.
7