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Delgado CHEM 141--Test 1 Chapters 1-2 Questions And Answers With 100% Correct Answers
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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...

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  • August 3, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • delgado chem 141

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  • Delgado CHEM 141
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Delgado CHEM 141--Test 1 Chapters 1-2

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 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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