1 / 30

STAAR Reporting Category 1 Matter & Energy

STAAR Reporting Category 1 Matter & Energy. Middle School Science Science STAAR Need to Know. Atomic Theory. Atoms are building blocks of elements Atoms in each unique element are the same. (Ex: Every oxygen element has the same # of protons)

durin
Download Presentation

STAAR Reporting Category 1 Matter & Energy

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. STAAR Reporting Category 1Matter & Energy Middle School Science Science STAAR Need to Know STAAR Need to Know

  2. Atomic Theory • Atoms are building blocks of elements • Atoms in each unique element are the same. (Ex: Every oxygen element has the same # of protons) • Atoms are different from atoms of other elements (Ex: Hydrogen has a different # of protons than oxygen) • Two or more different atoms bond in simple ratios to form compounds (Ex: Hydrogen & oxygen can chemically combine to form water- H2O ) STAAR Need to Know

  3. solid liquid gas STAAR Need to Know

  4. STAAR Need to Know

  5. Atoms and Elements STAAR Need to Know

  6. Atomic Particle Charges Protons Positive + Neutrons Neutral = Electrons Negative - STAAR Need to Know

  7. Location of Subatomic Particles 10-13 cm electrons protons neutrons 10-8 cm nucleus STAAR Need to Know

  8. Inside the Nucleus Protons with a Positive charge AND Neutrons with a Neutral charge –that means they do not have a charge Outside the Nucleus- in electron cloud Electrons with a Negative charge Did you know electrons are very, very small and move very, very fast??? Location of Atomic Particles STAAR Need to Know

  9. Periodic Squares 11 Na 22.99 The periodic square for an element can tell you lots of information about that atom. Atomic number = # of protons Atomic number = # of electrons That means in a neutral (uncharged) atom the # of protons and electrons are always the SAME!!!! STAAR Need to Know

  10. Atomic Mass on the Periodic Table 11 Na 22.99 Atomic Number or Protons Symbol Atomic Mass or Protons + neutrons STAAR Need to Know

  11. Atomic number Atomic number = # of Protons STAAR Need to Know

  12. Mass Number The number of protons andneutrons in an atom STAAR Need to Know

  13. Number of Electrons • A balanced atom is neutral • The net overall charge is zero • Number of protons = Number of electrons • Atomic number = Number of electrons STAAR Need to Know

  14. STAAR Need to Know

  15. STAAR Need to Know

  16. STAAR Need to Know

  17. Elements with similar properties are placed in the same group in the periodic table. The stair-step line separates the elements into metals and nonmetals. STAAR Need to Know

  18. Metals & Nonmetals STAAR Need to Know

  19. 26 30 26 Ru and Os 12 12 12 Ca and Sr 126 82 82 Sn and Ge 7 7 7 P and As STAAR Need to Know

  20. Molecules & Compounds STAAR Need to Know

  21. Pure substances Compounds STAAR Need to Know

  22. Mixtures Combination of two or more pure substances. Substances are mixed together but have not reacted to form any new molecules. Example- Sugar (a compound) dissolves in water (a compound) to form a mixture. The molecules of sugar and water do not change chemically. They just become mixed together. STAAR Need to Know

  23. Properties of matter Physical properties – can be observed without changing the substance into a different substance. STAAR Need to Know

  24. Chemical Properties Characteristics of a substance that are observed when it reacts (changes) to produce one or more different substances. Example- Water can be changed into hydrogen gas and oxygen gas using an electric current. When water molecules change chemically into hydrogen gas and oxygen gas, we say that a chemical change has occurred. Hydrogen gas and oxygen gas each have a different set of properties. Substances change into different substances through chemical reactions. STAAR Need to Know

  25. Chemical Reactions Substances change into other substances in chemical reactions. The atoms in the original substance are rearranged. The bonds in the original substance may be broken and new bonds may be formed between different atoms. This produces one or more new substances that may be either pure elements or compounds. The products of a chemical reaction always have difference chemical and physical properties than the original substance(s). STAAR Need to Know

  26. Evidence of a Chemical Reaction • a change in odor, • a change in color, • a solid precipitate is formed, • a gas is formed, • there is either absorption or release of heat STAAR Need to Know

  27. STAAR Need to Know

  28. STAAR Need to Know

  29. Chemical Equations STAAR Need to Know

  30. Balancing Equations STAAR Need to Know

More Related