8th-First 9 weeks
8th-First 9 weeks
This curriculum map is a constantly monitored and edited document by building specific administration and teachers. Changes may occur throughout the school year to stay updated with state requirements. Any questions regarding content should be directed towards the teacher of your child’s class or content area.
How do atomic and molecular interactions explain the properties of matter that we see and feel?
1. Structures and properties of matter
a. Substances are made from different types of atoms, which combine with one another in various ways. Atoms form molecules that range in size from two to thousands of atoms.
b. Each pure substance has characteristic physical and chemical properties (for any bulk quantity under given conditions) that can be used to identify it.
c. Gases and liquids are made of molecules or inert atoms that are moving about relative to each other.
d. In a liquid, the molecules are constantly in contact with others; in a gas, they are widely spaced except when they happen to collide. In a solid, atoms are closely spaced and may vibrate in position but do not change relative locations.
e. Solids may be formed from molecules, or they may be extended structures with repeating subunits (Ex. crystals.)
f. The changes of state that occur with variations in temperature or pressure can be described and predicted using these models of matter.
2. Chemical reactions
a. Substances react chemically in characteristic ways. In a chemical process, the atoms that make up the original substances are regrouped into different molecules, and these new substances have different properties form those of the reactants.
b. The total number of each type of atom is conserved, and thus the mass does not change.
c. Some chemical reactions release energy, others store energy.
MS-PS1-1: I can make models to show how atoms are arranged in simple molecules (like ammonia), as well as extended structures (like sodium chloride).
MS-PS1-2: I can tell you if a chemical reaction has occurred by looking closely at data on the properties of substances before and after they interact with each other.
MS-PS1-3: I can gather and understand information to explain that synthetic materials are actually made from natural resources.
MS-PS1-4: I can make a model that predicts and describes how a pure substance changes when thermal energy is added or taken away.
MS-PS1-5: I can make and use a model to show that the total number of atoms does not change during a chemical reaction. I know that mass is conserved during a chemical reaction.
MS-PS1-6: I can build, test, and modify a device that either releases or absorbs thermal energy by chemical processes.
https://media.doe.in.gov/standards/indiana-academic-standards-grade-8-science.pdf
MS-PS1-1. Develop models to describe the atomic composition of simple molecules and extended structures
MS-PS1-2 Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
MS-PS1-3 Gather and make sense of information to describe that synthetic materials come from natural resources and impact society.
MS-PS1-4. Develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.
MS-PS1-5 Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.
MS-PS1-6 Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.