# data[].attributes.headline
Core Competency 8: Physical and Chemical Properties

# data[].attributes.subject
Core Competency 8: Physical and Chemical Properties

# data[].attributes.body
The teacher understands the physical and chemical properties of and changes in matter.
The beginning teacher:
A. Describes and measures the physical and chemical properties of substances (e.g., size, shape, temperature, magnetism, hardness, mass, conduction, density).
B. Describes the physical properties of solids, liquids and gases.
C. Distinguishes between physical and chemical changes in matter.
D. Applies knowledge of physical and chemical properties (including atomic structure) of and changes in matter to processes and situations that occur in life and in earth and space science.
E. Distinguishes between elements, compounds, mixtures and solutions and describes their properties.
F. Describes and explains the occurrence and importance of a variety of chemical reactions that occur in daily life (e.g., rusting, burning of fossil fuels, photosynthesis, cell respiration, chemical batteries, digestion of food).

# data[].attributes.body
Of the following mixtures, which can be most effectively separated into its components using a mesh screen?

1. Oil and water

2. Sand and water

3. Sand and pebbles

4. Table sugar and water

# data[].attributes.body
key words: liquid
answer: b

# data[].attributes.body
Key/vocab words: powder, beaker, mixture, property

# data[].attributes.body
Key words: temperature water, heated, celsius

# data[].attributes.body
Key words: dropped, foam cups, keys, and coins, method, objects
Content words: less dense, density, same density
- Morning group #3

# data[].attributes.body
Answer : B
plastic, glass, and steel

# data[].attributes.body
Key Words: Periodic table, Elements, Electrons.

# data[].attributes.body
Vocabulary: Observe Key Words: Water at Room Temp, Stirred Contents

# data[].attributes.body
Answer: J
Keywords/ Vocabulary: properties, liquid, soluble, magnet

# data[].attributes.body
Answer: G

# data[].attributes.body
Keywords: Physical properties, substances, energy, water

# data[].attributes.body
Key words- Density, magnet, magnetic, physical properties
answer: G

# data[].attributes.body
Key Word/ Vocab: Circuit, Switch, Opened

# data[].attributes.body
Key words/ Vocab: gravel, water, NOT, seperate

# data[].attributes.body
Keywords: change, mixed, water

# data[].attributes.body
A student mixes a sample of soap is bowl of stones with a sample of stable salt. The mass and volume of the samples were determined before mixing the samples.  The mass and volume of each sample is shown.
Material:     Grams:      Mililiters:
Stones.          45.                25
Salt.                40.                35

Which statement os true about the mixture?
A: The mass of the mixture is 85 grams
B: the mass of the mixture is 60 milliliters.
C: the volume of the mixture is 60 grams.
The volume of the mixture is 85 milliliters

Answer: F
Vocabulary terms: mass, volume, grams , milliliters

# data[].attributes.body
Q16 Keywords: physical properties

# data[].attributes.body
Answer F
vocabulary: mass volume

# data[].attributes.body
vocabulary - conclusion, soluble, dense

# data[].attributes.body
Key Words: substance, gas, shape, container, ONLY, small particles, cube, shaped, observations,  shiny, visible, cold, crystals, gas
Answer H

# data[].attributes.body
Key words: physical properties, classify

# data[].attributes.body
Vocabulary: Compare, mass, observations Answer: G

# data[].attributes.body
Key words: Mass, grams, temperatures, melted, volume - Morning Group 3

# data[].attributes.body
Key words: properties, four objects, hand lens, magnet, beaker, water, identifies, property, classify,
Answer: F

# data[].attributes.body
Keywords:observed, liquid, wax, dripping, down, burning, candle, flame, several, hours, later, no longer, liquid
Keywords: G

# data[].attributes.body
Answer: D
Keywords: students, adds, grams, four, different, powered, solids, different, beakers, 10ML, water, each, stirs, mixtures, sit, half, hour, recording, observations, most likely, answer, investigation

# data[].attributes.body
Keywords: ingredients, placed in hot water, physical property, sugar cubes, salt, cooking oil, carrots, butter, solid, liquid, sinks, floats, dissolves. - Morning Group #3

# data[].attributes.body
Vocabulary/Key words: matter, conducts electricity & heat, soluble, solid, liquid, "conclusion"

# data[].attributes.body
Voca/key words: physical properties, most likely

# data[].attributes.body
Key words: Sand dune, road, fence
Answer: F

# data[].attributes.body
Keywords: physical properties, soluble, physical state.
Answer: J

# data[].attributes.body
Keywords: same, size, floats, sinks, conclusion, best supported

# data[].attributes.body
Key words: mass, volume, samples, mixing, mixture

# data[].attributes.body
Answer- G
Keywords- conducts electricity, conducts heat, soluble in water, and physical state at room temperature

# data[].attributes.body
Answer:

The salt will dissolve.

The water will remain clear.

# data[].attributes.body
Which of the following best describes an electron?

A  It has no charge and about the same mass as a proton.

B  It has a negative charge and much less mass than a proton.

C  It has a positive charge and much more mass than a neutron.

D  It has a negative charge and about the same mass as a neutron.

# data[].attributes.body
A scientist spilled a few drops of dilute hydrochloric acid (HCl) on a lab table. For safety purposes, the scientist sprinkled some baking soda (NaHCO3) onto the spill. Which observation would provide the best evidence that a chemical reaction occurred?

F  The baking soda and hydrochloric acid combined, and bubbles formed.

G  The baking soda absorbed the hydrochloric acid.

H  Some of the baking soda dissolved in the hydrochloric acid.

J The hydrochloric acid evaporated, leaving only the baking soda.

# data[].attributes.body
Which information could a student determine from only the chemical formula of a protein?

F  The color of the protein

G  The number of molecules in each sequence that makes up a protein

H  The physical arrangement of atoms in the structure of the protein

J The number of atoms of each element in the protein?v

# data[].attributes.body
A teacher asks a student to write the chemical equation for photosynthesis. The student’s response is shown below.

CO2 + H2O light C6H12O6 + O2
The equation is not balanced correctly. Which of these is a balanced equation for

photosynthesis?
A 12CO2 + H2O light C6H12O6 + O2

B CO2 + 9H2O light C6H12O6 + O2
C CO2 + H2O light 3C6H12O6 + O2
D 6CO2 + 6H2O light C6H12O6 + 6O2