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SCIENCE QUIZ BEE REVIEWER > Chemistry > Flashcards

Chemistry Flashcards

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1
Q

He is the Russian scientist who designed the periodic table

A

Dmitri Ivanovich Mendeleev

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2
Q

In Greek mythology Kronos used a scythe made adamantine to chop his father, Ouranos into tiny pieces. In the present, adamantine is considered as the hardest substance in earth. What is another name for adamantine?

A

Diamond

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3
Q

The first metal used by a man

A

copper

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4
Q

Mercury has a symbol of Hg in the periodic table. It is derived from its Latin name which is

A

Hydrargyrum

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5
Q

The most malleable metal is

A

Gold

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6
Q

What is the chemical name of baking soda?

A

Sodium bicarbonate

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7
Q

The famous pesticide
DDT was banned in 1923 because of its harmful effects to human health. What does the acronym
DDT stands for?

A

Dichlorodiphenyltrichloroethane

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8
Q

Element symbol of Samarium

A

Sm

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9
Q

the sun and sky appear a red color during sunsets. The phenomenon by which the gas molecules selectively scatter shorter wavelengths of light is called .

A

Rayleigh scattering

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10
Q

Is a gauge that measures instantaneous speed

A

Speedometer

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11
Q

A projectile launched at 45° will attain the

A

Greatest change

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12
Q

What is the chemical name of NH4+

A

Ammonium

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13
Q

What is the chemical name of CrO4²-

A

Chromate

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14
Q

What is the chemical name of NO2?

A

Nitrogen Dioxide

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15
Q

Acetate can be shown as C2H3O2- or CH3COO-

A

True

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16
Q

What is the chemical name of CO3²-

A

Carbonate

17
Q

OH- can be described as which polyatomic ion?

A

Hydroxide

18
Q

What is the chemical difference between sulfate and sulfite?

A

Sulfate has one more oxygen than sulfite

19
Q

What are the substances that enter a chemical reaction called?

A

Reactants

20
Q

What are the substances that are the result of a chemical reaction called?

A

Products

21
Q

What is the bond called that occurs between nonmetals and nonmetals?

A

Covalent bond

22
Q

An atom is considered to be _______ when the number of protons and electrons are equal.

A

Neutral

23
Q

Which chemical reaction occurs when energy is released?

A

Exothermic

24
Q

What part of the atom is involved in chemical bonding?

A

Valence electrons

25
Q

What is a bond where electrons are shared?

A

Covalent bond

26
Q

What is a bond where electrons are transferred?

A

Ionic bond

27
Q

What is a substance called that is used to speed up a chemical reaction but is not consumed as part of the reaction?

A

Catalyst

28
Q

What is the physical state of a substance when it forms a precipitate?

A

Solid

29
Q

What chemical reaction occurs when energy is absorbed?

A

Endothermic

30
Q

What is a bond called that occurs between metals and nonmetals?

A

Ionic bond

SCIENCE QUIZ BEE REVIEWER (2 decks)

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