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Learn From Home

Learning resources brought to you by Tucson Unified's Curriculum and Instruction

We've provided a rich selection of free, fun online learning sources in English language arts (ELA), math, science, and visual arts to supplement your learning. These are organized by grade level. Click the grade level for your child to get started!

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This page contains a "menu" of lessons and activities for this week. You will find the objectives: the specific skills that you work on. Then you will find a selection of lessons and activities which help you practice and master those skills. If you run into technical issues or other difficulties with any of these, simply move on and choose another.

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STEM - Week Five

Printable Version of this lesson board in PDF format

High School STEM

Week 5 May 4-May 8

Weekly Packet

Topic: Classification of Matter
Science Objectives: Students will be able to:

  • determine the number of atoms in a molecule by reading a chemical formula.
  • classify matter as a pure substance or a mixture based on particle representation or using chemical formulas.
  • classify pure substances as elements or compounds based on particle representations or using chemical formulas.

Vocabulary

Matter: any substance that has mass and takes up space by having volume.
Pure Substance: a sample of matter with both definite and constant composition and distinct chemical properties. 
Element: a substance whose atoms all have the same number of protons: another way of saying this is that all of a particular element's atoms have the same atomic number.
Compound: any substance consisting of two or more different types of atoms (chemical elements).

Mixture: a material made up of two or more different substances that are physically combined.
Homogenous Mixture: is a solid, liquid, or gaseous mixture that has the same proportions of its components throughout any given sample (uniform throughout).
Heterogeneous Mixture: is a solid, liquid, or gaseous mixture that has unequal proportions of its components throughout the sample.

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