Delgado CHEM 141--Test 1 Chapters 1-2 Questions And Answers With 100% Correct Answers
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Course
Delgado CHEM 141
Institution
Delgado CHEM 141
2.Choose the pure substance from the list below.
A) tea
B) a casserole
C) carbon monoxide
D) sugar water
E) pomegranate juice - C) carbon monoxide
pure substances that cannot be decomposed into simpler substances by chemical reactions -
elements
building blocks of matter - atoms (and elemen...
pure substances that cannot be decomposed into simpler substances by chemical reactions -
elements
building blocks of matter - atoms (and elements)
two or more atoms attached in specific geometrical arrangements - molecules
science that seeks to understand the behavior of matter by studying the behavior of atoms and
molecules - chemistry
scientific method steps - 1. observation
2. experiments
3. hypothesis
4. law
5. theory
careful noting and recording of natural phenomena - observation
procedures designed to test an idea - experiments
, tentative explanation of a single or small number of observations - hypothesis
generally observed occurrence in nature - law
general explanation of natural phenomena - theory
physical states of matter - solid, liquid, gas
composition of matter - pure substances and mixtures
made of 1 type of particle; show the same intensive properties - pure substances
types of pure substances - elements
compounds
submicroscopic particles - atoms
pure substances that can be decomposed into simpler substances by chemical reactions -
compounds
chemical combinations of elements - compounds
all molecules in a compound are __. - identical--same behavior
most natural pure substance - compounds
made up of multiple types of particles; may show different intensive properties - mixtures
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