From: Science
Curriculum
Framework (of Arkansas). Revised 1999
GRADES K-4 (Student
Learning Expectations)
PS.2.1. Recognize the differences and
similarities of solids, liquids and gases.
PS.2.2. Understand the physical properties of
objects.
PS.2.3. Learn about the physical world by
observing, data collecting, using age-appropriate tools, describing, and hypothesizing.
PS.2.4. Revise hypothesis by sharing and
communicating observations through writing.
PS.2.5. Explore energy changes.
PS.2.6. Identify chemical and physical
changes.
GRADES 5-8 (Student Learning
Expectations)
PS.2.1. Demonstrate an understanding of the states
of matter
and describe the various combinations of matter (mixtures and compounds).
PS.2.2. Identify and describe the properties of
an atom.
PS.2.3. Investigate the periodic chart.
PS.2.4. Experiment and identify physical and chemical
changes.
PS.2.5. Examine the sources and analyze the
preservation of energy
resources.
GRADES 9-12 (Student
Learning Expectations)
PS.2.1. Evaluate the historical and
multi-cultural contributions to the scientific body of knowledge in
physical systems (nature of
light, falling objects, expanding universe, model of the atom, quantum
physics,
periodic table). Construct time
lines.
PS.2.2. Classify matter into elements, compounds, and mixtures.
Classify mixtures as heterogeneous or
homogeneous and separate mixtures into pure
substances
using procedures such as distillation or chromatography.
PS.2.3. Explore various physical and chemical
properties of matter such
as
density, specific heat, viscosity, buoyancy, and reactivity.
PS.2.4. Distinguish between physical and chemical
changes that affect
everyday
life, such as hot and cold packs, light sticks, rusting, fireworks
display, and
water displacement.
PS.2.5. Use models to show the structure and
behavior of matter (includes Rutherford's Gold Foil
Experiment, sub-atomic
particles, electron
energy
levels, quantum
theory,
and organic molecules).
PS.2.6. Understand the rationale of the
periodic chart.
PS.2.7. Explain the relationship among mole, chemical
bonding, and molecular
geometry
within chemical compounds.
PS.2.8. Demonstrate the relationships between kinetic theory and the states of matter (gas laws).
PS.2.9. Understand the representation of and
energetics of chemical reactions (equation writing, types of reactions,
stoichiometry, reaction
rates, equilibria and electrochemistry).
PS.2.10.
Understand the
nature of solutions (solubility, concentrations, pH, acids/bases, colligative
properties, and buffer
solutions).
PS.2.11. Define the four fundamental forces in nature
(gravitational, electromagnetic, weak nuclear and strong nuclear).
modified 2-27-05