Develop and use a model to compare and contrast pure substances (elements and compounds) and mixtures. (Clarification statement: Include heterogeneous and homogeneous mixtures. Types of bonds and compounds will be addressed in high school physical science.)
Plan and carry out investigations to compare and contrast chemical (i.e., reactivity, combustibility) and physical (i.e., density, melting point, boiling point) properties of matter.
Construct an explanation based on evidence to describe conservation of matter in a chemical reaction including the resulting differences between products and reactants. (Clarification statement: Evidence could include models such as balanced chemical equations.)
Construct an argument based on observational evidence to support the claim that when a change in a substance occurs, it can be classified as either chemical or physical. (Clarification statement: Evidence could include ability to separate mixtures, development of a gas, formation of a precipitate, change in energy, color, and/or form.)
Develop models (e.g., atomic-level models, including drawings, and computer representations) by analyzing patterns within the periodic table that illustrate the structure, composition, and characteristics of atoms (protons, neutrons, and electrons) and simple molecules.
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Q 1/10
Score 0
In a solution, the parts of the solution are mixed
30
physically
by electronic means
only in water
chemically
Q 2/10
Score 0
What is the difference between an element and a compound?
30
A compound is represented by a single letter, an element is two or more different letters
A compound can be found on the periodic table, an element is not found there.
Compound is a pure substance of only one kind of atom, an element is two of mor different compounds bonded together
Element is a pure substance of only one kind of atom, a compound is two or more different elements bonded together
10 questions
Q.
In a solution, the parts of the solution are mixed
1
30 sec
S8P1a
Q.
What is the difference between an element and a compound?
2
30 sec
S8P1a
Q.
Using the diagram, what is true about matter as it changes states?
3
30 sec
S8P1b
Q.
What is the difference between a chemical and a physical change?
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30 sec
S8P1c
Q.
What must be true for a chemical equation to be balanced?
5
30 sec
S8P1f
Q.
What is the difference between a chemical and a physical change?
6
30 sec
S8P1d
Q.
All of the statements are true about the arrangement of elements in the periodic table EXCEPT that the
7
30 sec
S8P1e
Q.
A column on the periodic table is called a
8
30 sec
S8P1e
Q.
How are the elements in the periodic table arranged?
9
30 sec
S8P1e
Q.
In this picture, which box on the right is correct according to the Law of Conservation of Mass?
