Concept explainers
1-13 Define the following terms:
(a) Matter (b) Chemistry
(a)
Interpretation:
The definition of matter should be identified.
Concept Introduction:
Any substance which occupied some space and has some mass is known as matter. It could be solid, liquid and gas.
Answer to Problem 1P
The substance which occupied some space and has mass is said to be matter.
Explanation of Solution
The substance which occupied some space and has mass is said to be matter. The classification of matter is given by:
- SOILD:
All substance that exists with fixed volume and shape and have maximum density or strong molecular attraction among their particles known as solids. For example, copper sulphate, salt and sugar.
- LIQUID:
Liquids are then another form of matter in which the force of attraction among particles less than solids and did not have fixed volume or shape like solids. For example, water, alcohol and benzene.
- GAS:
It is a third form of matter in which the force of attraction among molecules negligible and has high pressure and volume like ammonia, oxygen and carbon dioxide.
(b)
Interpretation:
The definition of chemistry should be identified.
Concept Introduction:
Chemistry is a branch of science in which we learn about the chemical and physical properties of matter through different reactions and experimental analysis.
Answer to Problem 1P
The branch of science which deals with the physical and chemical properties of the matter on the basis of different experiments and reactions is said to be Chemistry.
Explanation of Solution
On the basis of wide range of natural and synthetic compound obtained we can divide chemistry into following three parts.
- INORGANIC CHEMISTRY:
In this branch of chemistry we learn about the reactions and physical properties of elements found mostly in earth crust like metals, non-metals etc.
- ORGANIC CHEMISTRY:
All natural or carbon, hydrogen and oxygen containing compounds reactions are studied under this branch of chemistry like alcohols, carbohydrates and alkaloids etc.
- PHYSICAL CHEMISTRY:
Experimental analysis of different reactions under different atmospheric conditions are studied under this branch of chemistry like chemical equilibrium, chemical kinetics etc.
Want to see more full solutions like this?
Chapter 1 Solutions
Introduction To General, Organic, And Biochemistry
- 1-55 Does the chemical nature of a substance change when it melts from a solid to a liquid?arrow_forwardClassify the substances represented by the models in problem 1-58 as to the type of pure substance, that is, as element or compound.arrow_forward1-67 If 168 g of an unknown liquid requires 2750 cal of heat to raise its temperature from 26oC to 74oC, what is the specific heat of the liquid?arrow_forward
- 1-65 While you drive your car, your battery is being charged. How would you describe this process in terms of kinetic and potential energy?arrow_forward1-68 The specific heat of steam is 0.48 cal/g oC. How many kilocalories are needed to raise the temperature of 10.5 kg of steam from 120oC to 150oC?arrow_forward1.71 Is touch screen technology better described as a single design or as a more complex system? Explain your answer.arrow_forward
- 1-76 If the density of air is 1.25 10-3 g/cc, what is the mass in kilograms of the air in a room that is 5.3 m long, 4.2 m wide, and 2.0 m high?arrow_forward1-77 Classify these as kinetic or potential energy: (a) Water held by a dam (b) A speeding train (c) A book on its edge before falling (d) A falling book (e) Electric current in a lightbulbarrow_forward1-70 (Chemical Connections IA) The average lethal dose of heroin is 1.52 mg/kg of body weight. Estimate how many grams of heroin would be lethal for a 200-lb man.arrow_forward
- Which of the following particulate illustrations represent pure substances and which represent mixtures?arrow_forward1-87 Water that contains deuterium rather than ordinary hydrogen (see Section 2-4D) is called heavy water. The specific heat of heavy water at 25oC is 4.2 17 J/g oC. Which requires more energy to raise the temperature of 10.0 g by 10oC, water or heavy water?arrow_forward1-92 A solar cell generates 500. kJ of energy per hour. To keep a refrigerator at 4oC, one needs 250. kcal/h. Can the solar cell supply sufficient energy per hour to maintain the temperature of the refrigerator?arrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage LearningIntroductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage Learning
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage LearningWorld of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage Learning