University:
California State University, Northridge
Course:
CHEM 101 | General Chemistry I
Academic year:

2024
Views:

366

Pages:

8
Author:

Samuel K

Chapter 1: Introduction to ChemistryDue Feb 6 at 11:59pmPoints 15Questions 15Available Jan 30 at 12am - Feb 6 at 11:59pmTime Limit NoneInstructionsdue by Monday at midnight.This quiz is no longer available as the course has been concluded.Question 11 ptsWhat is the first step in the scientific method?ExperimentationObservationConclusionAnalysis Question 21 ptsWhich of the following is a pure substance composed of only onetype of atom?CompoundMixtureElementSolutionQuestion 31 ptsWhat is the smallest unit of an element that retains its chemicalproperties?CAtomMoleculeCompoundlon Question 41 ptsWhat is a combination of two or more substances in which eachsubstance retains its chemical identity?ElementCompoundMixtureSolutionQuestion 51 ptsWhich of the following is an example of a homogeneous mixture?Trail mixSalad dressingGranite rockChicken noodle soup Question 61 ptsWhat is the chemical symbol for gold?GdOAuAgFeQuestion 71 ptsWhat is the basic building block of matter?MoleculeAtomElementCompound Question 81 ptsIn a chemical reaction, what happens to the mass of the reactants andproducts?It decreasesIt increasesIt remains constantIt becomes zeroQuestion 91 ptsWhat is the term for a substance that cannot be broken down intosimpler substances by chemical means?ElementCompoundMixtureSolution Question 101 ptsWhich of the following is a physical change?Burning woodBoiling waterRusting ironDigesting foodQuestion 111 ptsWhat is the SI unit for temperature?Kelvin (K)Celsius (°C)Fahrenheit (°F)Joule (J) Question 121 ptsWhich of the following is an example of a chemical change?Melting iceCutting paperRusting metalDissolving salt in waterQuestion 131 ptsWhat is the role of a control group in an experiment?It is the group exposed to the experimental variable.It provides a baseline for comparison.It receives the treatment in an experiment.It is not necessary in scientific experiments. Question 141 ptsWhat is a hypothesis?A proven scientific facteA tentative explanation for an observationA mathematical equationA unit of measurementQuestion 151 ptsWhat is the purpose of conducting scientific experiments?To prove theoriesTo support personal beliefsTo gather evidence and test hypothesesTo confirm biases