NYS Chemistry Regents Exam (01/2023)

Which conclusion was developed as a result of the gold foil experiment?

• Atoms are mostly empty space.

• All atoms are hard, indivisible spheres.

• Atoms have different volumes.

• All atoms have the same volume.

Which two particles each have a mass approximately equal to one atomic mass unit?

• positron and proton

• positron and electron

• neutron and electron

• neutron and proton

Tags

NGSS.HS-PS1-8

An excited potassium atom emits a specific amount of energy when one of its electrons moves from

• the first shell to the fourth shell

• the second shell to the fourth shell

• the fourth shell to the fifth shell

• the fourth shell to the second shell

Tags

NGSS.HS-PS1-2

Which list of elements includes a metal, a metalloid, and a noble gas?

• Rb, Cl, Ne

• Sr, Si, Rn

• Rn, Cl, Ne

• Si, Rb, Sr

Tags

NGSS.HS-PS1-1

Which element has the lowest density at 298 K and 101.3 kPa?

• argon

• fluorine

• nitrogen

• oxygen

Which phrase describes the crystal structure and properties of two different forms of solid carbon called diamond and graphite?

• same crystal structure and same properties

• same crystal structure and different properties

• different crystal structures and different properties

• different crystal structures and same properties

Tags

NGSS.HS-PS2-6

Which element has chemical properties most similar to sodium?

• magnesium

• oxygen

• phosphorus

• rubidium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which substance contains elements chemically combined in a fixed proportion?

• manganese

• methane

• silicon

• strontium

Tags

NGSS.MS-PS1-1

Which property can be used to differentiate between a 50-gram sample of solid potassium nitrate at STP and a 50-gram sample of solid silver chloride at STP?

• mass

• temperature

• phase

• solubility

Which type of bond forms when electrons are equally shared between two atoms?

• a polar covalent bond

• a nonpolar covalent bond

• a hydrogen bond

• an ionic bond