8 th Grade Science Standards Sequence and STAAR Question Frequency Overview. Readiness Standards 60% - 65% of STAAR
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1 Hedgehog Learning 8 th Grade Science Standards Sequence and STR Question Frequency Overview STR Reporting ategory Readiness Standards 60% - 65% of STR Supporting Standards 35% - 40% of STR ay 1 ay 2 ay 3 Matter and Energy (14 questions) 8.5 ( 2 questions) 8.5 ( 2 questions) 8.5 ( 2 questions) 8.5 ( 2 questions) 7.5 (0-1 question) 7.6 (0-1 question) 7.6 (0-1 question) 6.5 (0-1 question) 6.6 (0-1 question) 6.6 (0-1 question) 8.5E ( 2 questions) 8.5F (0-1 question) ay 4 ay 5 Force, Motion, and Energy (12 questions) 8.6 ( 4 questions) 8.6 (0-1 question) 6.8 (0-1 question) 6.8 (0-1 question) 8.6 ( 4 questions) 7.7 (0-1 question) 6.8 (0-1 question) 6.9 (0-1 question) ay ( 2 questions) 8.7 ( 2 questions) 8.7 (0-1 question) 6.11 (0-1 question) ay 7 ay 8 ay 9 ay 10 Earth and Space (14 questions) Organisms and Environments (14 questions) 8.8 ( 2 questions) 8.8 (0-1 question) 8.8 (0-1 question) 8.8 (0-1 question) 8.9 ( 2 questions) 8.9 ( 2 questions) 8.11 ( 3 questions) 8.11 ( 3 questions) 8.9 (0-1 question) 8.10 (0-1 question) 8.10 (0-1 question) 8.10 (0-1 question) 7.8 (0-1 question) 7.10 (0-1 question) 7.10 (0-1 question) 7.11 (0-1 question) 8.11 ( 3 questions) 8.11 (0-1 question) 7.12 (0-1 question) 7.12 (0-1 question) 7.12F (0-1 question) 7.14 (0-1 question) 7.14 (0-1 question) 6.12 (0-1 question) 54 Questions Questions Questions Embedded Process Standards 8.1-, 8.2-E, 8.3-, 8.4- Investigation and reasoning TEKS are embedded within each day s lesson. *Question frequencies are estimates based on the 65%/35% readiness to supporting ratio within each reporting category. TE has not stated exactly how often each standard will be assessed.
2 Y 1-8 th Grade Science STR Review Name ate Matter and Energy - TEKS 8.5 (R), 8.5 (R), 7.5 (S), 7.6 (S), 7.6 (S) Use this model to answer the questions on this page. 2. How does the mass of location y compare to the mass at location x? Location y has a mass multiple thousand times larger than location x. Location y has a mass only slightly larger than location x. Location x and y have the same mass. Location x has a mass twice as large as location y. 1. Which of the following statements best describes the subatomic particle at location X? 3. What are the names of the two subatomic particles located at y? It has a very large mass and is negatively charged. protons and electrons It has almost no mass and no charge. neutrons and protons The charge of the subatomic particle at location x is opposite of the charge at location y. It has a positive charge similar to location y. neutrons and electrons protons and neutrinos. opying allowed for purchasing school ONLY.
3 Y 1-8 th Grade Science STR Review Name ate Matter and Energy - TEKS 8.5 (R), 8.5 (R), 7.5 (S), 7.6 (S), 7.6 (S) 4. Which of the particles in the chart below is a neutron? Particle Mass harge Location 1 +1 nucleus 1 0 nucleus 0-1 outside nucleus Particle Particle Particle 6. In question 5, what identifies the atom on the left as sodium (Na)? Sodium always has an equal balance of neutrons and electrons. No other atom can have only one valence electron. Only sodium can chemically react and bind with chlorine. None of the above Sodium is the only element with 11 protons. 5. Sara creates a chemical reaction between sodium and chlorine. How many valence electrons are transferred between the two atoms in the model below? 7. Which of these atoms will be more reactive and why? 1 electron tom, because it has fewer electrons. 2 electrons tom, because it has unequal charges. 3 electrons tom, because it gives up a valence electron. 4 electrons tom, because it more neutrons.. opying allowed for purchasing school ONLY.
4 Y 1-8 th Grade Science STR Review Name ate Matter and Energy - TEKS 8.5 (R), 8.5 (R), 7.5 (S), 7.6 (S), 7.6 (S) 8. Michael eats a cookie at lunch. Which of the following actions during the digestive process is a chemical change? 10. What term describes the chemical change at X in this food chain that allows the transfer of energy? Michael chewing the cookie before swallowing. Enzymes in Michael s saliva breaking down the sugar compounds. Michael abdominal muscles pushing the cookie through the small intestines. Small amounts of water being absorbed from the cookie in the large intestine. photosynthesis respiration X reproduction condensation 9. What is the best title for the chart below? Title ontains long chains of carbon atoms Foundation of all living things an include hydrogen, oxygen, nitrogen, phosphorus, and sulfur haracteristics of Metals in the Periodic Table Items that onduct Electricity Highly Reactive Elements Organic ompounds 11. Miriam is investigating the reaction between magnesium metal with oxygen in the laboratory. What safety issues should Miriam be aware of? Magnesium metal is not very reactive. Miriam should only wear an apron to protect her clothes from spills. The reaction will produce carbon monoxide, a toxic gas. Magnesium is very reactive with oxygen. Miriam should wear goggles, gloves, and an apron. Water will be produced. She will need a beaker to collect the liquid.. opying allowed for purchasing school ONLY.
5 Y 1 Key Vocabulary and oncepts Name ate Match the science vocabulary word or concept to the correct definition.. tomic Mass. tomic Number. hemical hange. ompound E. Electron Shells F. Electron G. Element H. Mixture I. Neutron J. Nucleus K. Organic ompounds L. Proton M. Reactivity N. Valence Electrons 1. The tendency of an element to react with other elements to produce compounds. 2. compound containing a chain of carbon atoms bound with other elements such as hydrogen and oxygen. 3. combination of two or more types of matter that retain their own individual properties. 4. subatomic particle that has almost no mass and a negative charge. 5. The number of protons in the atoms of a particular element that is unique only to that element. 6. positively charged subatomic particle located in the nucleus and has an atomic mass of collection of orbitals around the nucleus, each having its own energy level. 8. neutral subatomic particle located in the nucleus. 9. The number of negatively charged particles in the most outer shell. 10. The mass of an atom equal to the number of protons and neutrons. 11. chemical substance made up of two or more kinds of atoms bonded together. 12. The reaction between substances that results in new substances with different properties. 13. pure substance containing only one type of atom. 14. The center of an atom that contains the proton and neutrons and has a positive charge.. opying allowed for purchasing school ONLY.
6 GRE 8 STR SIENE REVIEW Written by hris Jackson, Ed..
7 ll clipart and images used in this review are either created by Hedgehog Learning, found in public domain, or used with permission from istockphoto, ilipart, Microsoft, or 123RF
8 MTTER N ENERGY TEKS 8.5 (R), 8.5 (R), 7.5 (S), 7.6 (S), 7.6 (S)
9 Protons, Neutrons, and Electrons Nucleus of the tom ontains Protons and Neutrons Electron loud of the tom ontains Electrons
10 Take a minute to fill in the table below on a piece of paper Mass of Particle (1, 0) harge of Particle ( 1, 0, +1) Location of Particle Protons Neutrons Electrons
11 Is this what you came up with? Mass of Particle (1, 0) harge of Particle ( 1, 0, +1) Protons Neutrons Electrons Location of Particle Nucleus Nucleus Orbitals or Electron loud
12 Makeup of an Element The TOMI NUMER indicates the number of PROTONS in an ELEMENT The TOMI MSS (rounded) indicates the number of PROTONS plus NEUTRONS Only Oxygen has 8 protons, which makes it a unique element. To find the number of neutrons, subtract the atomic number from the atomic mass: 16 8 = 8 Electrons are normally equal to the number of protons if the charge of the atom is zero.
13 Element + Element = ompound Most elements will either gain or lose valence electrons and become charged. Nonmetals (right side of periodic table) typically gain electrons and are negatively charged. Metals (left side of the periodic table) typically lose electrons and are positively charged ecause metals and nonmetals are oppositely charged, these individual elements will combine to form compounds.
14 = VLENE ELETRON 12 P 8 P Mg O
15 Lose 2 Electrons +2 harge = VLENE ELETRON Gain 2 Electrons 2 harge 12 P 8 P Mg O
16 The number of valence electrons will determine how reactive an element will be. If an element has valence electrons to gain or lose, it will be very reactive. If an element has all eight valence electrons, it is considered to be non reactive.
17 Identify examples of physical and chemical changes that occur at each of these points.
18 hewing and swallowing (physical) and saliva (chemical) Stomach acids breakdown proteins and fats (chemical) bsorption of water (physical) and breakdown of proteins, fats, and carbohydrates (chemical).
19 Energy and Food Webs On a piece of paper, diagram the flow of energy through these organisms.
20 Energy and Food Webs SUN
21 Organic ompounds Organic ompounds are compounds containing carbon. Hydrogen Organic compounds are the building blocks of life, including substances like fats, sugars, and protein. Oxygen RON Phosphorus Fossil fuels are also organic compounds. an you identify any other carbon containing compounds? Sulfur Nitrogen
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