Develop models to describe the atomic composition of simple molecules and extended structures.
Emphasis is on developing models of molecules that vary in complexity. Examples of extended structures could include minerals such as but not limited to halite, agate, calcite, or sapphire. Examples of molecular-level models could include drawings, 3-D models, or computer representations showing different molecules with different types of atoms.
Gather and make sense of information to describe that synthetic materials come from natural resources and impact society.
Emphasis is on natural resources that undergo a chemical process to form synthetic materials. These natural resources may or may not be pure substances. Examples of new materials could include new medicine, foods, or alternative fuels, and focus is on qualitative as opposed to quantitative information.
Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.
Emphasis is on the design, controlling the transfer of energy to the environment, and modification of a device using factors such as type and concentration of a substance. Examples of designs could involve chemical reactions such as dissolving ammonium chloride, calcium chloride or a citric acid and baking soda (sodium bicarbonate) reaction in order to warm or cool an object.
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Q 1/23
Score 0
Which of the following correctly represents the atomic composition of a water molecule?
30
CO2
NaCl
H2O
O2
Q 2/23
Score 0
What is the simplest model to describe the atomic composition of carbon dioxide (CO2)?
30
One carbon atom bonded to three oxygen atoms
One carbon atom bonded to two oxygen atoms
Two oxygen atoms and no carbon atom
Two carbon atoms and one oxygen atom
23 questions
Q.
Which of the following correctly represents the atomic composition of a water molecule?
1
30 sec
8-MS-PS1-1
Q.
What is the simplest model to describe the atomic composition of carbon dioxide (CO2)?
2
30 sec
8-MS-PS1-1
Q.
Which model best represents the atomic structure of a molecule of methane (CH4)?
3
30 sec
8-MS-PS1-1
Q.
How can the atomic composition of quartz (SiO2) be best described?
4
30 sec
8-MS-PS1-1
Q.
Which model accurately represents the atomic structure of an ethane molecule (C2H6)?
5
30 sec
8-MS-PS1-1
Q.
What is the simplest model to represent the atomic composition of oxygen gas (O2)?
6
30 sec
8-MS-PS1-1
Q.
Which extended structure is composed of a repeating pattern of sodium and chlorine atoms?
7
30 sec
8-MS-PS1-1
Q.
Which of the following synthetic materials is derived from a natural resource through a chemical process?
8
30 sec
8-MS-PS1-3
Q.
Which synthetic material is commonly produced from natural gas and used as a fuel alternative?
9
30 sec
8-MS-PS1-3
Q.
What natural resource is commonly used in the production of synthetic fabrics?
10
30 sec
8-MS-PS1-3
Q.
What is a primary environmental concern associated with the production of synthetic materials from natural resources?
11
30 sec
8-MS-PS1-3
Q.
What is one way synthetic fertilizers, derived from natural resources, impact agriculture?
12
30 sec
8-MS-PS1-3
Q.
Which synthetic material, derived from a natural resource, is commonly used in the automotive industry for its lightweight properties?
13
30 sec
8-MS-PS1-3
Q.
How does the production of synthetic rubber from natural resources impact society?
14
30 sec
8-MS-PS1-3
Q.
What is one way synthetic materials have positively impacted society?
15
30 sec
8-MS-PS1-3
Q.
What is the primary purpose of a design project that constructs a device to release or absorb thermal energy through chemical processes?
16
30 sec
8-MS-PS1-6
Q.
Which factor is essential to modify when designing a device that controls thermal energy through chemical reactions?
17
30 sec
8-MS-PS1-6
Q.
Why is it important to test and modify the device used to release or absorb thermal energy?
18
30 sec
8-MS-PS1-6
Q.
In an experiment to absorb thermal energy, what role does substance concentration play?
19
30 sec
8-MS-PS1-6
Q.
Which of the following processes is an example of an exothermic reaction?
20
30 sec
Q.
What describes an endothermic reaction?
21
30 sec
Q.
Which of the following is a characteristic of exothermic reactions?
22
30 sec
Q.
What happens to the energy in an endothermic reaction?
