Safety
What does the acronym HHPS stand for?
Hazardous Household Products Symbol
What is the formula for density?
D = M/ V
Density = Mass divided by Volume
What does KMT stand for?
Kinetic Molecular Theory
One of the earliest known atomic theories suggested that matter was made of earth, wind, fire, and air. Who suggested this theory?
Aristotle
Define the term atom.
Smallest particle of an element that retains the properties of that element
What does the acronym WHMIS stand for?
Workplace Hazardous Materials Information System
What is the difference between a qualitative and quantitative observation?
Qualitative- describe using WORDS
Quantitative- describe using NUMBERS
How many states of matter are there AND what are their names?
4: solid, liquid, gas, and plasma
This Greek philosopher thought that matter was made of tiny particles called "atomos." What was the name of this philosopher AND what does "atomos" mean?
Democritus
Uncuttable
Define the term "subatomic particle."
Particle smaller than an atom
What does it mean if something is corrosive? How can you protect yourself from a corrosive material?
Corrosive- can degrade (eat through) materials causing severe damage
Wear gloves and goggles, follow proper disposal instructions, listen to teacher directions, etc.
Mass- grams, kilograms, etc.
Volume- milliliters, centimeters cubed, etc.
What is the relationship between condensation and evaporation?
They are opposites
Condensation = gas to liquid
Evaporation = liquid to gas
What was the name of JJ Thomson's model of the atom AND his main discovery?
Main discovery = electron
Model= Plum Pudding/ Blueberry Muffin Model
For the three subatomic particles, write their name, charge, and mass.
Proton, positive, 1
Neutron, neutral, 1
Electron, negative, 0
What does SDS stand for and what is useful about an SDS?
Safety Data Sheet- contains information about the properties of a hazardous substance, as well as steps to handle and store it safely.
Name 2 physical and chemical PROPERTIES that could be used to describe matter.
Physical- colour, shape, texture, mass, volume, melting point, boiling point, etc.
Chemical- flammability, reactivity with oxygen, radioactivity, toxicity, etc.
What is deposition? Give an example of deposition to support your answer.
Deposition- gas changes directly into a solid
Water vapour turning to ice on the inside of a window during winter
Name 2 important points from John Dalton's atomic theory.
Matter is made of atoms
Atoms cannot be created, destroyed, or divided
Atoms of the same element are identical
Different atoms combine to form compounds
Chemical reactions cause atoms to separate, combine, or rearrange
Name three differences between a proton and an electron.
1. Location in atom (nucleus vs energy shells)
2. Charge (positive vs negative)
3. Mass (1 vs 0)
4. Size (large vs small)
In the HHPS system, what is the meaning of a flame inside of an octagon?
Flame- flammable
Octagon- product inside is dangerous
Describe the difference between a physical and chemical change AND give an example of each.
Physical Change- alters a substance without changing its chemical identity. Ex: crumpling paper, freezing water, etc.
Chemical Change- one type of matter changes into a new substance. Ex: burning wood, cooking an egg.
What are the four main point of the KMT?
1. Matter is made of very small particles
2. Particles exist in a space
3. Particles are constantly moving
4. Energy makes particles move
Describe Rutherford's atomic theory AND how his own student, Chadwick, made corrections to this theory.
Rutherford- discovered nucleus in gold foil experiment, nucleus = dense, positively charged center of atoms
Chadwick- nucleus contains protons and neutrons, nucleus = positive AND neutral parts
Draw our most up-to-date model of the atom and label the following parts: nucleus, proton, neutron, electron, energy level
See teacher example