pre chemistry test

question

which phrase best describes an apple? (A) heterogenous mixture (B) homogenous compound (C) heterogenous substance (D) homogenous mixture
answer

A
question

which of the following is not a chemical change? (A) paper being shredded (B) steel rusting (C) charcoal burning (D) newspaper yellowing in the sun
answer

A
question

which element is paired with the wrong symbol? A. sulfur, S. B. potassium, P. C. nitrogen, N D. calcium, Ca
answer

B.
question

the state of matter characterized by a definite volume and an indefinite shape is a A. solid B. liquid C. mixture D. gas
answer

B.
question

(A) compound (B) heterogenous mixture (C) element (D) homogenous mixture Which description correctly identifies each of the following materials? 6. air
answer

6. D.
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(A) compound (B) heterogenous mixture (C) element (D) homogenous mixture Which description correctly identifies the following material? 7. carbon monoxide
answer

7. A.
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(A) compound (B) heterogenous mixture (C) element (D) homogenous mixture Which description correctly identifies the following material? 8. zinc
answer

8. C.
question

(A) compound (B) heterogenous mixture (C) element (D) homogenous mixture Which description correctly identifies the following material? 9. B.
answer

9. B.
question

the smallest particle of an element that retains its identity in a chemical reaction is a (A) proton (B) neutron (C) atom (D) compound
answer

C.
question

classify the following as homogenous or heterogenous A. a page on a textbook
answer

heterogenous
question

classify the following as homogenous or heterogenous B. a banana split
answer

heterogenous
question

classify the following as homogenous or heterogenous C. the water in bottled water
answer

homogenous
question

identify the following as a chemical or physical change A. melting of iron
answer

physical change
question

identify the following as a chemical or physical change B. lighting a match
answer

chemical change
question

identify the following as a chemical or physical change C. grinding corn
answer

physical change
question

identify the following as a chemical or physical change D. souring of milk
answer

chemical change
question

how is organic chemistry distinguished from inorganic chemistry?
answer

organic chemistry is study of chemicals containing carbon, inorganic chemistry is study of chemicals without carbon
question

what is the name given to a chemist who studies the composition of matter?
answer

analytical chemist
question

classify the following as physical or chemical change A. cookies are baked
answer

chemical change
question

classify the following as physical or chemical change B. firefly emits light
answer

chemical change
question

classify the following as physical or chemical change C. figure is carved from wood
answer

physical change
question

classify the following as physical or chemical change D. caramel is made from sugar
answer

chemical change
question

which of the following substances is not a homogenous mixture? A. gold ring B. spaghetti sauce C. cane sugar D. window glass E. river water f. bottled water
answer

b, c, e
question

picture of candles burning, name 1 chemical change and 2 physical changes
answer

chemical change:wax burning physical changes:wax melting, wax vaporizing
question

classify the following as physical or chemical change A. aspirin tablet is crushed to a powder
answer

physical change
question

classify the following as physical or chemical change B. red nose turns brown
answer

chemical change
question

classify the following as physical or chemical change C. grape juice turns to wine
answer

chemical change
question

classify the following as physical or chemical change D. fingernail polish remover evaporates
answer

physical change
question

classify the following as physical or chemical change E. bean seed sprouts
answer

chemical change
question

classify the following as physical or chemical change F. piece of copper is beaten into a thin sheet
answer

physical change
question

which of the following are true about every solution? A. solutions are in the liquid state B. solutions are homogenous C. solutions are mixtures D. solutions are composed of at least two compounds
answer

b, d
question

match the following type of chemistry with a numbered statement A. Physical Chemistry 1. measure the level of lead in blood 2. study non-carbon based chemicals in rocks 3. investigate changes that occur as food is digested in the stomach 4. study carbon-based chemicals in coal 5. explain the energy transfer that occurs when ice melts
answer

explain the energy transfer that occurs when ice melts
question

match the following type of chemistry with a numbered statement B. inorganic chemistry 1. measure the level of lead in blood 2. study non-carbon based chemicals in rocks 3. investigate changes that occur as food is digested in the stomach 4. study carbon-based chemicals in coal 5. explain the energy transfer that occurs when ice melts
answer

study non-carbon based chemicals in rocks
question

match the following type of chemistry with a numbered statement C. organic chemistry 1. measure the level of lead in blood 2. study non-carbon based chemicals in rocks 3. investigate changes that occur as food is digested in the stomach 4. study carbon-based chemicals in coal 5. explain the energy transfer that occurs when ice melts
answer

study carbon-based chemicals in coal
question

match the following type of chemistry with a numbered statement D. biochemistry 1. measure the level of lead in blood 2. study non-carbon based chemicals in rocks 3. investigate changes that occur as food is digested in the stomach 4. study carbon-based chemicals in coal 5. explain the energy transfer that occurs when ice melts
answer

investigate changes that occur as food is digested in the stomach
question

match the following type of chemistry with a numbered statement E. analytical chemistry 1. measure the level of lead in blood 2. study non-carbon based chemicals in rocks 3. investigate changes that occur as food is digested in the stomach 4. study carbon-based chemicals in coal 5. explain the energy transfer that occurs when ice melts
answer

measure the level of lead in blood
question

which of the following is not part of the scientific method? A. hypothesis B. experiment C. guess D. theory
answer

C. guess
question

describe difference between organic and inorganic chemistry
answer

organic chemistry is study of chemicals that contain carbon, inorganic chemistry is study of chemicals that don’t contain carbon
question

purpose of experiment
answer

to test a hypothesis
question

the branch of chemistry that studies chemical containing carbon is ? chemistry A. physical B. inorganic C. analytical D. organic
answer

D.

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