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Noble gases such as helium and neon are known for being chemically what?
ARadioactive
BFlammable
CInert, meaning largely unreactive
DHighly reactive
What is the primary function of the kidneys?
ADigesting proteins
BFiltering waste products from the blood
CPumping blood around the body
DProducing insulin
Why does the sky appear blue during a clear day?
AThe sky reflects the color of the ocean
BBlue light is scattered more than other colors by the atmosphere
CBlue light travels slower through air
DThe sun emits mostly blue light
What color does blue litmus paper turn when dipped into an acidic solution?
AYellow
BBlue
CGreen
DRed
What is produced when an acid reacts with a base in a neutralization reaction?
AOnly carbon dioxide
BOnly water
CA new acid
DSalt and water
Which organ produces insulin to help regulate blood sugar levels?
ASpleen
BPancreas
CKidney
DLiver
Which type of lens is used to correct nearsightedness, also called myopia?
AConcave lens
BConvex lens
CCylindrical lens only
DBifocal lens only