Catalyst – Phases of Matter
• Identify the following items as solid, liquid, or gas:
Soda Can
Liquid Sprite
Soda Fizz
Whipped Cream Can
Whipped Cream
Whipped Cream Fizz
• Feeling comfortable? Let’s kick it up a notch.
Identify the following items as solid, liquid, or gas:
Smoke
Shaving Cream
Milk
Jello
Cheese
Fog
Butter
Whipped Cream
• Why is this new batch of items harder to identify?
• What rules govern when an object is solid, liquid or gas?
These Items Are Actually Colloids!
Lecture 1.1 – States of
Matter and Physical
Composition
Today’s Target
• SWBAT use a particulate model to explain the relationships
that exist between solid, liquid, or gas and elements,
compounds and mixture
Learning Targets
• LT 1.1 – I can differentiate between solids, liquids, and gases
using a particulate model and discuss the relative density of
their particles.
• LT 1.2 – I can distinguish between elements and compounds in
a particulate diagram
• LT 1.3 – I can distinguish between pure substances and mixtures
based on their composition using particulate models
• LT 1.4 – I can draw particle diagrams to represent pure
substances and homogenous or heterogeneous mixtures.
Today’s Itinerary
• Catalyst
• Review Particle Diagrams
• Investigate and Analyze:
1.(Solids, Liquids, Gases)
2.(Elements, Compounds,
and Mixtures)
• Independent Practice
• Pre-lab for Mini-Lab:
Aluminum Foil and Pool
Cleaner
• Exit Slip
At the Particulate Level
(APL)
• Let’s review our particulate level knowledge of
matter.
• Can we classify them further? What should we do?
• Which ones did we determine qualified as solids,
liquids, and gases? Why did we say that? What do
we suppose their relative densities would be?
• What do our density of different dairy graphs
indicate?
Particles – They’re Everywhere!
• Everything in the world is made up of
tiny, microscopic atoms that interact with
each other in a defined manner.
Particles – They’re Everywhere!
• Scientists use
model of matter in
terms of their
particles to explain
that the three states
of matter are
different because
of the differences
in the motion and
arrangement of the
particles.
Cooking and Temperature
• When we cook our food, we increase its
temperature by applying heat.
• The hotter an object, the more energy its
particles have, and the faster they move.
Solids, Liquids, and Gases
• As energy in the form of heat is added to
substances, they change the phase they exist
in*. We know these phases as solid, liquid,
and gas.
More Energy (Heat) Added
Solids, Liquids, and Gases
• Each phase of matter has different specific,
observable properties.
Particles as Atoms and Molecules
• Atoms – An atom is the smallest component of an
element that still retains the element’s properties (i.e.
Hydrogen)
• Molecules – A molecule consists of two or more atoms
of the same element, or different elements, that are
chemically bound together. (i.e. Water)
Elements, Compounds, and Mixtures
• Pure Substance – Composed of the same particles
 Elements – Elements are unique substances
consisting of a single type of atom distinguished by
proton #
 Compounds – consists of atoms of two or more
different elements bound together with new
properties
Elements, Compounds, and Mixtures
• Mixture – Two substances that are chemically
combined to produce a new substance with its own
identity
Model Flow Chart
Exemplar Particle
Diagrams
Get in the Kitchen - Practice
• You may use the next 15 minutes to either:
1. Practice identifying elements, molecules, pure
substances, compounds, and mixtures in Problem
Set 1.1
2. Work on Density Lab Work
3. Finish HW/Problem sets for Units 0 and 1.
Quiz
Closing Time
• Finish Density Lab and graph analysis. Make sure
questions have been answered thoroughly.
• Thursday/Friday will be our mini-lab class. Prepare.