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Chemistry Chapt 1-2

QuestionAnswer
The study of the processes that take place in organisms Biochemistry
Concerned with the mechanism, rate, and energy transfer that occurs when matter undergoes a change Physical Chemistry
The study of all chemicals CONTAINING carbon Organic Chemistry
The study of all chemicals that, in general, DO NOT CONTAIN carbon Inorganic Chemistry
The study of the composition of matter Analytical Chemistry
Gaseous state of substance that is a liquid or solid at room temperature Vapor
A physical blend of two or more components Mixture
Part of a sample having uniform composition and properties Phase
Not uniform in composition Heterogeneous
A substance formed in a chemical reactoin Product
Starting substance in a chemical reaction Reactant
Amount of matter an object contains Mass
Describes mixture with a uniform composition Homogeneous
A process in which a liquid is boiled to produce a vapor that is condensed again into a liquid Distillation
Substance that cannot be changed into simpler substances by chemical means Element
Composed of two or more substances chemically combined in a fixed proportion Compound
Process in which substances are changed into different substances Chemical Reaction
Which field of science studies the composition and structure of matter? A leaf changing color in autumn
What describes Pure chemistry Study of chemicals CONTAINING carbon
What is NOT an example of chemistry research in the main area of Energy? Producing Hook-and-Loop tape
What is a example of a current research focus in chemsitry Applying gene therapy to treat certain diseases
What can be observed only in a microscopic view? structure of a muscle cell
One characteristic of a scientific Theory is that: It can never be proved
Which step in the scientific method requires you to use your senses to obtain information? Making an observation
What step should you always follow for an effective problem solving? Developing a plan and then implementing the plan
How do conceptual problems differ from numeric problems? Solutions to conceptual problems normally do not involve calculations
What is not an example of matter? Heat
A Golf ball has more mass than a tennis ball because it Contains more matter
An example of an extensive property of matter is: Mass
Rusting is a propertie of which one Chemical or physical? Chemical
What are considered physical properties of a substance? Color and Odor, melting and boiling points, malleability and hardness
Vapor is what kind matter? Gas
A substance that forms a vapor is generally in what physical state at room temperature? Liquid and Solid
Which state of matter has a definite volume and takes the shape of its container? Liquid
Which state of matter takes both the shape and volume of its container? Gas
Which state of matter is Characterized by having an indefinite shape, but a definite volume? Liquid
Which state of matter is characterized by having a definite shape and a definite volume Solid
Which state of matter expands when heated and is easy to compress? Gas
What is NOT a physical propertie of a substance in a liquid state? Indefinite Volume
What is a physical Change? Evaporation
What can not be classified as a substance Air
What can not be considered a single phase? A Heterogeneous Mixture
What is true about homogeneous mixtures? They are known as solutions
What is a Heterogeneous mixture? Oil and vinegar
What is a Homogeneous Mixture? Salt and water
Whats an example of a Homogeneous Mixture? Stainless steel
What is true about homogeneous mixtures? They are known as solutions
What is a Heterogeneous mixture? Oil and vinegar
What is a Homogeneous Mixture? Salt and water
Whats an example of a Homogeneous Mixture? Stainless steel
What distinguishes a substance from a mixture? Mixtures can be separated physically, while compounds cannot
What is true about compounds? They are substances
What is materials is a substance? Silver
What is the difference between a mixture and a compound a compound can only be separated into its components by chemical means
What do chemicals symbols and formulas represent, respectively? Elements and Compounds
What distinguishes a substance from a mixture? Mixtures can be separated physically, while compounds cannot
What is a chemical propertie? Ability to react with oxygen
What represents a compound? Example: H2O
What must occur for a change to be a chemical reaction? There must be a change in chemical properties
The chemical formula of a compound does NOT indicated ____? What? How elements are joined in the compound
What do chemicals symbols and formulas represent, respectively? Elements and Compounds
What is a chemical propertie? Ability to react with oxygen
What is not a physical Change? Fermenting of cheese
What must occur for a change to be a chemical reaction? There must be a change in chemical properties
What is not a physical Change? Fermenting of cheese
What is not involved in a physical change? Deomposing
What must be done to be certain that a chemical Change has taken place? Check the composition of the sample before and after the change
What indicates that a chemical change may have taken place Fracture formation
What happens to matter during a chemical reaction Matter is neither destroyed or created
What is true about all Chemical Reactions The total mass of the reactants equals the total mass of the products
Created by: Bluejaye1995