Chemistry Mid-Term Exam

Chemical and physical processes that absorb thermal energy are called __________ processes.

Chocolate milk is an example of what type of mixture?

How many atoms of oxygen (O) are there in a molecule of penicillin G (C16H18N2O4S)?

The freezing point of nitrogen is –210 °C. What is the temperature in kelvins?

the ability of a material to transfer heat or electricity

Which law of thermodynamics states that energy cannot be created nor destroyed.

All matter is made up of tiny particles called what?

Which law of thermodynamics states that entropy is always increasing?

If electrons occupy the same orbital, they must have opposite spins. This is stated by the __________.

Which of the following accurately describes the Bohr model?

the ability for matter to hammered into different shapes

Sulfur has how many valence electrons?

Sand and salt are mixed together. Which technique can be used to seperate them.

The measure of the dispersal of energy in a system is known as __________.

Change 5.02 x 10^3 to standard notation.

Which of the following was a belief that matter was made of separate, discrete particles?

how likely matter is to catch fire

What are the 3 major concepts of a Biblical worldview.

When all the orbitals for an atom are combined, a roughly spherical region is produced around the atom called the _____.

gas turns directly into a solid

An evaluation of how close a measured value is to the expected or accepted value of a dimension being measured.

on really cold days rain solidifies into snw

Who is credited with the discovery of the neutron?

boiling water evaporates into steam

Which temperature scale CANNOT be used for scientific inquiry?

How many significant figures are in the measurement 0.000 34 m?

The d sublevel may contain up to _________ electrons.

The first step in the scientific model begins with an __________.

In the formula Mg(OH)2, the numeral 2 is called a __________.

A rock weighs more than a piece of foam, even if the foam is bigger. What property of matter does this illustrate?

dry ice turning into vapor at room tempearature

J. J. Thomson concluded that every atom contained small, __________ particles.

the amount of matter that is packed into a specific volume

How many significant figures are in the measurement 4800 cm?

What is something that we can used to identify if a chemical change has occured.

If an atom gains an electron, the atom will have a ___________ charge.

how likely a substance is to living things

The fact that any sample of water contains 8 g of oxygen for every 1 g of hydrogen illustrates __________.

It indicates how repeatable a measurement is or how exactly one can make a measurement

butter placed on a hot pan turns inta a liquid

The experiment in which alpha particles were deflected by gold foil was conducted by __________.

What unit is used to measure both energy and work?

holds the greatest amount of electrons

Pure water is a __________.

What scientist was responsible for the discovery of the electron?

The act of comparing an unknown quantity to a standard unit is known as __________.

You measure the mass of a product to be 1.87 g. Theoretical calculations predict that you should have obtained 1.95 g

The type of sublevel found in all principal energy levels is the _____.

The human eye can detect wavelengths of light as short as 0.000 037 cm. What is this wavelength in nanometers?

Which form of matter has fast-moving and widely spaced particles?

How many atoms of sulfur are present in Al2(SO4)3?

The kinetic-molecular theory is a model that describes the __________ of particles in matter.

dew on the grass in the morning is caused by

has a spherical shape

how likely matter is to react with other substances

What does 25 500 g equal in kilograms?

Which phase would be categorized by having no/very little particle attraction and a lot of kinetic enery.

Which of the following digits are considered significant in a measurement?

What are the four things that make up the electron address.

What is the measurement of the average kinetic energy of all the particles within a substance.

A log burns, creating heat is example of __________.

What rule is used to show how electrons would fill in?

the ability for matter to be turned into a wire

The number of protons in an atom’s nucleus is its __________.

How many hydrogen atoms are in the chemical formula H2O?

can contain up to ten electrons

Which of the following statements shows a naturalistic worldview?

The wave-particle duality theory describes how an electron can act as both a particle and a(n) _________.

Oxygen (O2) is a __________.

The mass of a crystal was measured on a balance to be 8 grams. This would be an example of __________ data.

Two different isotopes of a single element would have the same number of __________ but a different number of _________.

What is the boiling point of water in Celsius

What is the maximum number of electrons in a 3p orbital?

You measure products three times and get 4.12 g, 3.25 g, and 4.79 g. The actual mass is 2.25 g. Your measurements are

contains only one orbital

What is the ability to do work?

What is the smallest particle that makes up an element and is capable of chemical interaction?

What is the current atomic model?

Who used cathod rays to discover the electron?

The extremely small and dense center of an atom.

What is the pattern for colored lines that was discovered while analyzing light produced by heated elements?

Who came up with the a model where atoms are solid spheres of differing shape?

The weighted averages of the isotopes of an element determine its __________.

What sublevel has a dumbbell shape?

The sum of the number of neutrons and the number of protons in an isotope represents the __________ of the isotope.

How many principal quantum numbers are there?

Significant figures apply only to __________ data.

Which one is not a part of an atom?

Which model the launches alpha particles towards a gold foil and seeing some pass through and other being deflected?

Information that consists of descriptions and not numerical values is called __________ data.

Which of the following is an example of a physical change?

Perform the following operation: (26.9 m)(5.0 m).

Who was the greek philospher that referred to matter as being made of discrete particles?

The measurement 0.005 006 10 m has how many significant figures?

Which of the following is a type of quantitative data?

Light is made up of massless particles called _________.

Which phase would be categorized by having more particle attraction that kinetic energy.

What is the study of matter and the changes that it undergoes?

Which state of matter exists in stars?

Perform the following operation: 7.491 m + 60.2 m + 1.002 24 m.