Chemistry

I

100

Which two elements are in the liquid form at STP?

Br and Hg

200

Which scientist proposed the Plum Pudding Model?

J.J. Thomson

300

What kind of bond exists when there is mutual sharing of electrons between two atoms?

Covalent Bond

400

What is the conversion of one chemical element or an isotope into another chemical element?

Transmutation

500

State the type of bond, formula, and the name if there is a bond between Calcium and Chlorine.

Ionic

CaCl₂

Calcium chloride

II

100

Which element is the most electronegative?

F

200

Which scientist arranged the elements in the periodic table according to the atomic number?

Henry Moseley

300

What kind of bond exists in a case in which there is an interaction involving a hydrogen atom located between a pair of other atoms having a high affinity for electrons?

Hydrogen Bond

400

How do we call different structural forms of the same element in the same physical state?

Allotropes

500

State the type of bond, formula, and the name if there is a bond between Phosphorus and Bromine

Covalent

PBr₃

Phosphorus tribromide

III

100

Which element is found in smoke detectors?

Am

200

Which scientist performed the Gold Foil experiment?

Ernest Rutherford

300

What kind of bond exists in a case in which the electron density is unevenly shared between two bonded atoms, due to a difference in electronegativity?

Polar Covalent Bond

400

How do we call a mixture in which the composition is uniform throughout the mixture?

Homogeneous

500

State the type of bond, formula, and the name if there is a bond between Potassium and Iodine

Ionic

KI

Potassium Iodide

IV

100

Which element is found in diamond?

C

200

Which scientist arranged the elements in the periodic table according to the atomic mass?

Dmitri Mendeleev

300

What kind of bond exists if there is a transfer of electrons?

Ionic Bond

400

How do we call a metal made by combining to or more metallic elements, especially to give greater strength or resistance to corrosion?

Alloy

500

State the type of bond, formula, and the name if there is a bond between Fe³⁺ and Chlorine

Ionic

FeCl₃

Iron (III) chloride

V

100

Which isotope is used to detect cancer?

Cobalt-60

200

Which scientist proposed the Billiard Ball Model for the atomic structure?

John Dalton

300

What kind of bond arises from the electrostatic force between conduction electrons and positively charged metal ions?

Metallic Bond

400

Which process involves two lighter atomic nuclei combine to form a heavier nucleus?

Fusion

500

State the type of bond, formula, and the name if there is a bond between Magnesium and Sulfur

Ionic

MgS

Magnesium sulfide