STAAR Chemistry Reference Materials - 2013

Sep 30, 2026

Uploaded by jayni

STAAR Chemistry reference materials for a high-school grade level, released with an April 2013 EoC Chemistry exam by Texas Released Tests. The booklet provides chemistry reference pages followed by multiple-choice questions covering ions and formulas, pH calculation, chemical properties, periodic table group characteristics, energy changes in reactions, nuclear fusion versus fission, ion transport in heart cells via water polarity, theoretical gas yield at STP, electron-dot diagrams, and identifying intensive properties from data.

LanguageEnglish

CategoryExam

FormatPDF

Pages32

Reading Time1 h 21 min

AccessFree to download

STAAR Chemistry Reference Materials

Chemistry multiple-choice questions

Test Booklet Subject: SC, Grade: HS STAAR April 2013 EoC Chemistry Student name: Author: Texas District: Texas Released Tests Printed: Tuesday August 27, 2013 STAAR CHEMISTRY REFERENCE MATERIALS Page 1 Page 2 Page 3 Page 4 1 What is the formula of the ion hydrogen sulﬁte, which has a charge of-1? A SO3-1 B SO4-1 C HSO3-1 D HSO4-1 2 What is the pH of a substance that has a hydrogen ion concentration of 1:2 􀀂 10􀀀2 M ? A 2.08 B 1.92 C 1.00 D 0.080 3 Which of the following includes an example of a chemical property of an element? A Aluminum is a solid at room temperature and is a poor thermal insulator. B Sulfur is not shiny and is not malleable. C Sodium is a solid at room temperature and reacts with other elements. D Silicon is shiny and is a poor conductor of electricity. 4 Elements in a group of the periodic table are described below. Some Properties of a Certain Group of Elements 􀀏 Soft silvery-white color 􀀏 Good conductor of thermal energy 􀀏 Good conductor of electricity 􀀏 Atoms contain a single valence electron These elements most likely belong to which group? A Alkali metals B Alkaline earth metals C Halogens D Noble gases Page 5 5 The diagram below shows what happens when zinc reacts with hydrochloric acid. Which of these best describes the energy transformation that occurs during this reaction? A Thermal energy ! kinetic energy B Kinetic energy ! potential energy C Chemical energy ! thermal energy D Potential energy ! chemical energy Page 6 6 The diagram below represents a nuclear reaction. Which of the following best describes this reaction? A Nuclear fusion is occurring because many smaller nuclei are being fused. B Nuclear ﬁssion is occurring because large amounts of energy are being absorbed. C Nuclear fusion is occurring because many energetic neutrons are being emitted. D Nuclear ﬁssion is occurring because a nucleus is being split into smaller nuclei. 7 A detail from a label on a bottle of a water-softening agent is shown below. Which inference about the contents of the bottle can best be drawn? A They consist of barium chloride anhydrous. B They consist of barium chloride dihydrate. C They consist of barium chloride hexahydrate. D They consist of barium chloride heptahydrate. Page 7 8 Heart cells require a certain balance of sodium and potassium ions to function. The blood, which is approximately 83% water, carries these two types of ions to the heart. The property of water that allows it to carry ions to the heart is its A molecular mass B speciﬁc heat C polarity D density 9 The equation below represents a chemical reaction that produces a gas. 2Na(s) + 2H2 O (l) ! 2NaOH (aq ) + H2 (g) What is the theoretical yield in liters of H2 gas if 5.00 g of Na are completely reacted and the H2 gas is collected at STP? A B C D 0.109 L 2.44 L 4.88 L 5.09 L Page 8 10 Which of these is the electron-dot diagram for Br2 (l)? A C B D 11 The table below lists some properties of a sample of lauric acid. Which of these is an intensive property of this sample? A Volume B Mass C Boiling point D Number of moles Page 9

FAQs

What topics are covered in these STAAR Chemistry reference questions?

The questions cover ions and formulas, pH, chemical properties, periodic table groups, reaction energy transformations, nuclear fusion versus fission, water’s role in ion transport, theoretical gas yield at STP, electron-dot diagrams, and intensive versus extensive properties.

How is pH evaluated in the questions?

pH is determined from a given hydrogen ion concentration expressed in scientific notation, with answer choices offered for direct selection.

What does “theoretical yield at STP” ask students to calculate?

It requires converting from the mass of a reactant to the volume of hydrogen gas produced, using reaction stoichiometry and conditions at STP.

Sep 30, 2026

Uploaded by jayni