August 2018 Chemistry Regents Questions 1-10 Question Preview (ID: 59738)


Use Your Knowledge Of Chemistry To Answer All Questions In The Data Set. You Will Need Your Chemistry Reference Tables And A Calculator To Answer Some Of The Questions. Good Luck. TEACHERS: click here for quick copy question ID numbers.

According to the wave-mechanical model, an orbital is defined as the most probable location of
a) a proton
b) a neutron
c) a positron
d) an electron

The part of an atom that has an overall positive charge is called
a) an electron
b) the nucleus
c) the first shell
d) the valence shell

Which subatomic particles each have a mass of approximately 1 u?
a) proton and electron
b) proton and neutron
c) neutron and electron
d) neutron and positron

The discovery of the electron as a subatomic particle was a result of
a) collision theory
b) kinetic molecular theory
c) the gold-foil experiment
d) experiments with cathode ray tubes

The elements on the Periodic Table of the Elements are arranged in order of increasing
a) atomic mass
b) formula mass
c) atomic number
d) oxidation number

Which element is classified as a metalloid?
a) Te
b) S
c) Hg
d) I

At STP, O2(g) and O3(g) are two forms of the same element that have
a) the same molecular structure and the same properties
b) the same molecular structure and different properties
c) different molecular structures and the same properties
d) different molecular structures and different properties

Which substance can be broken down by chemical means?
a) ammonia
b) aluminum
c) antimony
d) argon

Which statement describes H2O(ℓ) and H2O2(ℓ)?
a) Both are compounds that have the same properties.
b) Both are compounds that have different properties.
c) Both are mixtures that have the same properties.
d) Both are mixtures that have different properties.

Which two terms represent major categories of compounds?
a) ionic and nuclear
b) ionic and molecular
c) empirical and nuclear
d) empirical and molecular

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