Chemistry Regents Mid-Term Review

According to kinetic molecular theory, which statement describes the particles of an ideal gas?

Which property measures the average kinetic energy of the particles in a sample of matter?

Which particle has no charge?

The mole ratio of the balanced reaction below is

An electron in a sodium atom gains energy to move from the 2nd shell to the 3rd shell, becoming

Determine the number of neutrons in an atom of I-127.

Which substance can not be broken down by a chemical change?

Identify a strong intermolecular force between an alcohol molecule and a water molecule

A beaker with water and the surrounding air are all at 24 degrees Celsius. 

The element sulfur is classified as a

Some physical properties of 2 samples of iodine-127 at two different temperatures are shown:

chemical naming:

When lithium reacts with bromine to form the compound LiBr, each lithium atom

Gold can be flattened into an extremely thin sheet. The malleability of gold is due to the

The coefficients in a balanced chemical equation represent

What is formed when two atoms of bromine bond together?

Salt water is classified as a

When a sample of a gas is heated in a sealed, rigid container . . .

Determine the % composition by mass of carbon in baking soda (gram-formula mass  84 g/ mole). 

Two hydrogen atoms form a hydrogen molecule when

In the ground state, which noble gas has the same e^- configuration as the sulfide ion in Ag₂S? 

A sample of chlorine gas . . .

Subatomic particles: What is the approximate mass of a proton?

Which quantity represents the number of protons in an atom?

Bright-line spectra

Which term represents the attraction 1 atom has for the electrons in a bond with another atom?

Elements in Group 2 have similar chemical properties because each has the same:

A sample of a substance has these characteristics:

Powdered iron is magnetic; powdered sulfur is not. What occurs when they form a mixture . . .