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1. Chemical Formula-

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7th Grade Unit 10: Chemical Reactions and Compounds Lesson 2: Elements, Compounds, & Mixtures Vocabulary of Instruction: 1. Chemical Formula Combination of symbols ... – PowerPoint PPT presentation

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Title: 1. Chemical Formula-


1
7th Grade Unit 10 Chemical Reactions and
Compounds Lesson 2 Elements, Compounds,
Mixtures Vocabulary of Instruction
2
1. Chemical Formula
  • Combination of symbols and numbers that represent
    the elements in a compound. It shows the ratio of
    elements in a compound.

Structural Formula
C16H2N2Cl2 Chemical Formula ???
3
2. Compound
  • A substance made of two or more elements that are
    chemically bound together in a set ratio (carbon
    dioxide, water, etc.).

4
3. Element
Antimony
  • A substance that can not be broken down into any
    other substances by chemical of physical means
    (carbon, hydrogen, oxygen, nitrogen, etc).

Natural arsenic
5
4. Heterogeneous
  • Describes a chemical substance that has two or
    more phases or is made of two or more different
    elements or compounds.

6
5. Homogeneous
  • Describes a chemical substance that is made of
    two or more of the same kind of elements.

7
6. Mixture
  • Consists of two or more substances in the same
    place that are not chemically combined.

8
7. Molecule
  • A substance made of two or more atoms.

9
8. Periodic Table
  • Scientific tool that organizes information about
    the chemical elements in order of atomic number.

10
9. Substance
  • A single kind of matter that has distinct
    physical and chemical properties.

Water and steam are two different forms of the
same chemical substance
11
10. Symbol
  • One or two letters that represent an element from
    the Periodic Table.
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