Chemical and Physical Changes and Properties
The Law of Conservation of Matter (or Mass)
Chemicals That Harm Humans
What Determines How Chemicals Affect Us?
Elements & Compounds
100
Which is changing the most in a balloon as it is being blown up? [Foil A Button] density [Foil B Button] volume [Foil C Button] temperature [Foil D Button] conductivity
What is B?
100
Reactant X, with a mass of 15 grams, is mixed with reactant Y, having a mass of 10 grams. What is the mass of the product in a chemical reaction? [Foil A Button] 1.5 grams [Foil B Button] 5 grams [Foil C Button] 25 grams [Foil D Button] 150 grams
What is C?
100
Which is a known cause of cancer? [Foil A Button] ozone [Foil B Button] oxygen [Foil C Button] carbon dioxide [Foil D Button] ultraviolet (UV) light
What is D?
100
Which is the most likely method of exposure to toxic chemicals in cigarette smoke? [Foil A Button] ingestion [Foil B Button] inhalation [Foil C Button] absorption [Foil D Button] radioactive penetration
What is B?
100
Which best explains how elements are arranged on the periodic table? [Foil A Button] by name [Foil B Button] by atomic mass [Foil C Button] by atomic number [Foil D Button] by atomic symbol
What is C?
200
The relationship between the mass and volume of a substance best describes which property of a substance? [Foil A Button] melting point [Foil B Button] density [Foil C Button] specific heat [Foil D Button] solubility
What is B?
200
When vinegar and baking soda are combined, a mixture is produced and a gas is released. Which statement is true? [Foil A Button] The mass of the gas is greater than the mass of the vinegar and baking soda. [Foil B Button] The mass of the gas is the same as the mass of the vinegar and baking soda. [Foil C Button] The mass of the mixture and gas is equal to the mass of the vinegar and baking soda. [Foil D Button] The mass of the mixture and gas is greater than the mass of the vinegar and baking soda.
What is C?
200
An increased chance of developing cancer is most likely to be caused by which activity? [Foil A Button] smoking [Foil B Button] exercising [Foil C Button] using sunscreen [Foil D Button] eating a balanced diet
What is A?
200
Which main factor determines the potency of a chemical? [Foil A Button] how basic or acidic the chemical is [Foil B Button] the way it reacts with water under pressure [Foil C Button] the strength it has to cause damage from a small dose [Foil D Button] how its atomic number compares to the elements in the environment
What is C?
200
Which best describes the classification of an element that is a shiny solid, conducts electricity, and has an atomic mass of approximately 108? [Foil A Button] It is a metal. [Foil B Button] It is synthetic. [Foil C Button] It is a metalloid. [Foil D Button] It is a nonmetal.
What is A?
300
Which substance has the highest specific heat? [Foil A Button] glass [Foil B Button] gold [Foil C Button] water [Foil D Button] wood
What is C?
300
Which is true of any physical or chemical reaction? [Foil A Button] Mass increases. [Foil B Button] Mass decreases. [Foil C Button] Mass fluctuates. [Foil D Button] Mass is conserved.
What is D?
300
Which are doctors suggesting might be helpful to eliminate from the diets of children suffering from learning disabilities? [Foil A Button] salt [Foil B Button] sugar [Foil C Button] saturated fat [Foil D Button] chemical additives
What is D?
300
Which term describes the concentration at which a medication is effective? [Foil A Button] dose [Foil B Button] yield [Foil C Button] potency [Foil D Button] exposure
What is A?
300
What is the relationship between the atomic number and the number of protons in an atom? [Foil A Button] The two numbers are the same. [Foil B Button] The two numbers have opposite signs. [Foil C Button] The two numbers have no relationship. [Foil D Button] The two numbers have the product of 100.
What is A?
400
What is measured by specific heat? [Foil A Button] the temperature of a substance [Foil B Button] the amount of energy needed to turn a substance from a liquid to a gas [Foil C Button] the amount of energy needed to turn a substance from a solid to a liquid [Foil D Button] the amount of energy needed to raise the temperature of one gram of a substance one degree Celsius
What is D?
400
Based on the law of conservation of matter, in any physical or chemical reaction, which statement is true? [Foil A Button] The mass increases. [Foil B Button] The mass decreases. [Foil C Button] The mass remains the same. [Foil D Button] The mass depends on the chemicals involved.
What is C?
400
What chemical often found in seafood is linked to learning and behavioral disabilities in children? [Foil A Button] iodine [Foil B Button] mercury [Foil C Button] nicotine [Foil D Button] sodium
What is B?
400
Three people are given the same drug intravenously. If they are given different concentrations, what is most likely being tested? [Foil A Button] individual susceptibility [Foil B Button] drug effects [Foil C Button] potency [Foil D Button] dosage
What is C?
400
Which best explains how the periodic table is used to identify properties of elements? [Foil A Button] by the color and shape of the elements [Foil B Button] by the number of electrons in the elements [Foil C Button] by the group in which the elements are located [Foil D Button] by the period in which the elements are located
What is C?
500
A block is found that is made from an unknown element. Which is the best way to determine which element was used to create this block? [Foil A Button] determine its mass [Foil B Button] test its malleability [Foil C Button] calculate its density [Foil D Button] observe its reaction with a nonmetal
What is C?
500
Which best explains how the chemical reaction shown follows the law of conservation of matter? 2H + O → H2O [Foil A Button] The hydrogen and oxygen molecules combine to form water. [Foil B Button] Hydrogen and oxygen are held together by polar covalent bonds. [Foil C Button] There are hydrogen and oxygen atoms on both sides of the equation. [Foil D Button] The same amount of hydrogen and oxygen molecules are on both sides.
What is D?
500
Which description applies to a patient who suffers from asthma? [Foil A Button] The patient does not produce insulin as a result of an improper diet. [Foil B Button] The patient’s immune system attacks itself as a result of exposure to toxins. [Foil C Button] The patient has inflammation of the airways as a result of exposure to chemicals. [Foil D Button] The patient has decreased function of the kidneys as a result of exposure to chemicals.
What is C?
500
Substance X is said to be 10 times more potent than substance Y. Which best explains the meaning of this information? [Foil A Button] Substance X is better than substance Y. [Foil B Button] Substance Y is better than substance X. [Foil C Button] It will take 10 times the amount of substance Y to achieve the same results as substance X. [Foil D Button] It will take 10 times the amount of substance X to achieve the same results as substance Y.
What is C?
500
Which terms explain how elements combine in different ways to produce compounds? [Foil A Button] protons and neutrons [Foil B Button] exothermic and endothermic [Foil C Button] atomic mass and atomic number [Foil D Button] ionic bonding and covalent bonding
What is D?
M
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