NY Released Regents Exam - Chemistry (Aug 2023)
Quiz by NYSED Chemistry
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- Q1
Which proposal in the development of the modern model of the atom was made before the others?
Atoms are mostly empty space with a small dense nucleus.
Atoms are hard, indivisible spheres of different sizes.
Atoms have electrons that have wavelike properties.
Atoms have an internal structure that contains negative particles.
30sS4-K3.3.1 - Q2
According to the wave-mechanical model, in the ground state, the 10 electrons of a neon atom would be located
in the valence shell
in orbitals
in the nucleus
in the first shell
30sS4-K3.3.1 - Q3
Which statement describes two different isotopes of carbon?
The isotopes contain the same number of neutrons and have the same atomic number.
The isotopes contain a different number of neutrons and have a different atomic number.
The isotopes contain the same number of neutrons but have a different atomic number.
The isotopes contain a different number of neutrons but have the same atomic number.
30sS4-K3.3.1 - Q4
An element that is a very reactive metal could have an atomic number of
79
19
2
9
30sS4-K3.3.1 - Q5
Which element is listed with the number of protons in each of its atoms?
nitrogen, 14
oxygen, 16
phosphorus, 16
silicon, 14
30sS4-K3.3.1 - Q6
What is the overall charge on the nucleus of a fluorine atom?
-9
-1
+19
+9
30sS4-K3.3.1 - Q7
As the elements with atomic numbers 11 through 17 are considered in order of increasing atomic number, the classification of the elements changes from
nonmetal to metalloid to metal
nonmetal to metal to metalloid
metal to nonmetal to metalloid
metal to metalloid to nonmetal
30sS4-K3.3.1 - Q830sS4-K3.3.1
- Q930sS4-K5.5.3
- Q10
A compound consists of two or more different elements that are
physically mixed in a proportion that can vary
chemically combined in a fixed proportion
chemically combined in a proportion that can vary
physically mixed in a fixed proportion
30sS4-K3.3.1 - Q1130sS4-K3.3.1
- Q12
Which phrase describes the molecular polarity of and the charge distribution in an HCl molecule?
nonpolar with a symmetrical charge distribution
nonpolar with an asymmetrical charge distribution
polar with a symmetrical charge distribution
polar with an asymmetrical charge distribution
30sS4-K5.5.2 - Q13
Which atom forms an ion with a radius larger than the atomic radius?
lead atom
calcium atom
oxygen atom
tin atom
30sS4-K5.5.2 - Q14
Which sample can be classified as a substance?
seawater
soil
air
argon
30sS4-K3.3.1 - Q15
A 1.0-gram sample of NaCl(s) is dissolved in 100.grams of water at 25°C, and another 1.0-gram sample of NaCl(s) is dissolved in 50. grams of water at 25°C. Which property of the two resulting mixtures will be different?
color of the components in the mixture
polarity of the components in the mixture
proportion by mass of the components in the mixture
particle size of the components in the mixture
30sS4-K3.3.1