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CHEM 141 EXAM 1 QUESTIONS & ANSWERS(RATED A+)

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Represents the number of protons in an element - ANSWERAtomic number A positively charged atom or group - ANSWERCation (+ charged) Chemistry is the study of - ANSWERMatter A given compound always has the same relative

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CHEM 141 EXAM 1 QUESTIONS &
ANSWERS(RATED A+)
Represents the number of protons in an element - ANSWERAtomic number

A positively charged atom or group - ANSWERCation (+ charged)

Chemistry is the study of - ANSWERMatter

A given compound always has the same relative number and types of atoms -
ANSWERLaw of Definite Proportions

Possible solutions to a problem or a possible explanation for an observation -
ANSWERHypothesis

All atoms of the same element have the same - ANSWERnumber of protons

A process of creative thinking and testing aimed at the objective, verifiable discoveries
of the causes of natural events - ANSWERScientific Method

Atoms of an element that have different numbers of neutrons are called -
ANSWERIsotope

The uncharged subatomic particle is - ANSWERNeutron

Most of the mass of an atomic resides in the - ANSWERNucleus

The two types of pure substances are - ANSWERcompounds and elements

NO+ - ANSWERIon

NO - ANSWERCompound

No - ANSWERElement


Write the formulas for the following compounds - ANSWERCadmium oxide: CdO
Aluminum carbide: Al4C3
Acetic acid: HC2H3O2
Mercury(I) chloride: Hg2Cl2
Iodide heptafluoride: IF7
Nickle(III) phosphate: NiPO4

List the 3 postulates of the Dalton's Atomic Theory - ANSWER

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