Introductory Chemistry (5th Edition) (Standalone Book)
5th Edition
ISBN: 9780321910295
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 1, Problem 18E
Classify each statement as an observation, a law, or a theory.
a. The star closest to Earth is moving away from Earth at high speed.
b. A body in motion stays in motion unless acted upon by a force.
c. The universe began as a cosmic explosion called the Big Bang.
d. A stone dropped from an altitude of 450 m falls to the ground in 9.6s.
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Chapter 1 Solutions
Introductory Chemistry (5th Edition) (Standalone Book)
Ch. 1 - Where can you find chemicals? a. In a hardware...Ch. 1 - Q2. Which statement best defines chemistry?
a. The...Ch. 1 - According to the scientific method, what is a law?...Ch. 1 - Q4. Which statement is an example of an...Ch. 1 - Which characteristic is necessary for success in...Ch. 1 - Why does soda fizz?Ch. 1 - 2. What are chemicals? Give some examples.
Ch. 1 - Prob. 3ECh. 1 - 4. What is meant by the statement, “Matter does...Ch. 1 - Define chemistry.
Ch. 1 - 6. Many things that we take for granted in...Ch. 1 - 7. Explain the scientific method.
Ch. 1 - 8. What is wrong with the statement, “The...Ch. 1 - What is the difference between a law and a theory?Ch. 1 - 10. What is the difference between a hypothesis...Ch. 1 - What is wrong with the statement, It is just a...Ch. 1 - What is the law of conservation of mass, and who...Ch. 1 - What is the atomic theory, and who formulated it?Ch. 1 - A chemical experiment might look for one or more...Ch. 1 - Examine the opening figure of this chapter. Use...Ch. 1 - Examine Figure 1.1 and, from a molecular point of...Ch. 1 - Prob. 17ECh. 1 - 16. Classify each statement as an observation, a...Ch. 1 - 17. A student prepares several samples of the same...Ch. 1 - A student measures the volume of a gas sample at...Ch. 1 - A chemist in an imaginary universe does an...Ch. 1 - 20. A chemist decomposes several samples of water...Ch. 1 - 21. The manufacturer of a particular brand of...Ch. 1 - Prob. 24ECh. 1 - 23. In your own words, provide a brief definition...Ch. 1 - 24. How curious are you? How good are your...
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- 1.15 We used the example of attendance at a football game to emphasize the nature of observations. Describe another example where deciding how to count subjects of interest could affect the observation.arrow_forwardClassify each statement as an observation, a law, or a theory.a. All matter is made of tiny, indestructible particles called atoms.b. When iron rusts in a closed container, the mass of the container and its contents does not change. c. In chemical reactions, matter is neither created nor destroyed.d. When a match burns, heat is released.arrow_forward3. In order to decide whether a property is chemical or physical, you must know whether a. measuring the property changes mass or energy b. chemical or physical changes occur when the property is measured c. the property involves matter or energy d. the property is intrinsic or extrinsic 4. The specific volume of a substance is the volume per gram of substance. Specific volume is an example of a. a physical, intensive property b. a chemical, extensive property c. a physical, extensive property d. a chemical, intensive propertyarrow_forward
- 5. Particles of matter moved depending on the spaces between them. What word is used to describe the spaces between particles? C. Space A. Blank B. Gaps D. Void 6. Matter can be in a form of solid, liquid, or gases. What is a matter made of? A. Dark spots C. Tiny particles B. Hard particles D. Tiny spots 7. The movement of particles of matter can be affected by some external factors. What are the factors that affect the movement of particles of matter? B. Temperature A. Pressure C. Odor and appearance D. Size and temperaturearrow_forwardDetermine whether each change is physical or chemical.a. Water boils.b. A match burns.c. Sugar dissolves in water.d. Sodium reacts with water.e. Ice cream melts.arrow_forwardWhich substance can be separated by filtration? A. Compound B. Element C. Mixture D. Solution Which is an example of physical property of matter? * A. Baking a cake B. Cooking of gelatin C. Melting of ice D. Rusting of metal Which is an example of chemical property of matter? A. Digestion of food B. Evaporation of water C. Sublimation of moth balls D. Condensation of water vapor Which is a physical property of matter? A. Combustibility B. Corrosiveness C. Density D. Reactivityarrow_forward
- Which of the following is best characterized as a scientific law? a. The sun always rises in the east. b. Force equals mass in kilograms multiplied by acceleration in meters per second squared. c. Lemon juice can be used to treat psoriasis. d. All matter is comprised of tiny, indivisible particles called atoms. e. Iron will be oxidized to iron (III) oxide if exposed to water as it has a tendency to be oxidized.arrow_forward7.The density of osmium is 22.6 g/cm³. A sample of osmium with a mass of 21.8 g would occupy a volume of cm3. a. 0.965 b. 1.04 c. 493 d. 2.03 x 10-3 e. 2.03 x 10-3arrow_forwardWhich is considered an elemental substance? A.CO (carbon monoxide) B.H2O (water) C.I2 (iodine) D.A and C are elemental substances. E.All of the above are elemental substances.arrow_forward
- Which is a correct statement about methods for separating mixtures?A. Distillation results in the formation of solid particles of a dissolved substance.B. Filtration depends on differences in sizes of particles.C. Separations depend on the chemical properties of the substances involved.D. Chromatography depends on the different boiling points of substances.E. Sublimation can be used to separate two gases present in a mixture.arrow_forward6. Matter can be in a form of solid, liquid, or gases. What is a matter made of? A. Dark spots C. Tiny particles B. Hard particles D. Tiny spotsarrow_forwardDetermine if the following mixtures are homogeneous or heterogeneous. Explain why they are homogeneous/heterogeneous. a. Iodized salt b. Brown sugar c. Soft drinksarrow_forward
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