The number of protons in an atom of an element is the elements___________

H20 is an example of __________

The individual substances that make up a ____________ are not evenly mixed

Carbon dioxide is an example of_________

The number of protons in an atom of an element is the elements____________

A kind of matter that is classified as a solution could also be classified as_______

A chemical formula represents the different ____________

Which substance contains particles that move most quickly?

Which property is size-independent?

Which property would vary between two different sized samples of the same substance?

Dissolving is best describes as__________

When matter undergoes a physical change, mass is ______________

Chemical equations are used to describe ____________

Magnetism is a physical property that could be used to separate a mixture of____________

Color change, odor change, and bubbles are signs that____________ might have occurred.

What item is NOT shown in a balanced chemical equation?

___________ is least likely to be useful in separating the substances in a mixture

Which scientist discovered electrons?

Ernest Rutherford and his students did experiments that showed the existence of the _____________

Bohr proposed that electrons are located in_______________

Which particle is NOT made up of quarks?

Which type of decay does NOT result in the change of one element into another?

An ion forms when an atom gains or loses____________

A scanning tunnel microscope (STM) allows scientists to see____________

Which pair of individuals had the most similar ideas about matter?

Two atoms that have a different number of protons are___________

James Chadwick discovered___________

Isotopes are atoms that have different ___________

A neutral atom would become an ion that has a charge of 2+ by____________

The atoms in the products of a chemical reaction ______________

In a chemical reaction, energy is released________________

A chemical reaction that has two products and two reactants could be a______

Which procedure would cause a chemical reaction to speed up?

In a chemical reaction, the mass of the products is always ___________

In a chemical reaction, what is the activation energy required for?

__________ cannot be formed during a chemical reaction.

When chemical bonds in the reactants are broken, energy is absorbed during during which type of reaction?

A single replacement reaction has ____________

Which situation would cause a reaction to occur more quickly?

In a reaction that has one reactant and two products, the __________

Endothermic reactions and exothermic reactions ___________

Dilute is a term that is used to describe the _____________

A chemical change is required to separate the components of a _____________

An indicator shows a solution’s pH by Changing _______________

Solutions and heterogenous mixtures have ___________

As the concentration of hydronium atoms in a solution increase, its pH ________

Matter that is always composed of the same combination of atoms is a _______

Adding more solute to a solution changes the___________

An indicator is used to measure the ____________

Which phrase describes the parts of a solution but NOT the parts of a heterogenous mixture?

Which number is a possible pH for a solution that contains more hydronium ions than hydroxide ions?

If three different samples of a liquid have different compositions, then the liquid can be classified as ____________

Dividing the mass of the solute by the volume of the solution tells you the _______________

Which item could be separated into its component parts only by using a chemical change?

A pH meter contains electrodes that are sensitive to the ______________

Which phrase describes the parts of a heterogenous mixture but NOT the parts of a solution?

A change in a solution’s pH from 5 to 3 represents what change in the acidity of the solution?

For something to be classified as a substance rather than a mixture, its component parts must be ___________

Carbon is unique because of its ability to_____________

An organic compound contains carbon atoms bonded to at least one atom

A carbon atom must have additional electrons to be stable.

Buckyballs and nanotubes belong to a group of carbon compounds known as_____________

Which type of bonds can carbon atoms form with each other?

Which type of compound forms when a hydroxyl group is added to a carbon compound?

Which example describes a polymer?

Which functional group is known as a carboxyl group?

A molecule that forms a pyramidal shape is called a __________ molecule

A polymer is made up of many covalently _________ covalently bonded together, forming a long chain

A _________ can only travel through matter

A region of a longitudinal wave where the particles in the medium are closest together is a ________________

A material in which a wave travels is the ___________

A ____________ is a rapid back and forth motion that can occur in solids, liquids, or gases.

A ___________ is a region of a longitudinal wave where the particles are farthest apart.

A __________ makes the particles in the material that carry the wave move back and forth along the direction that the wave travels.

Which scale is used to describe the loudness of sound?

light travels in the form of _______

A red apple appears to be red because it absorbs ___________

The bending of light waves as they enter a new medium is caused by a change of_________

Light waves diverge as they pass through _____________

Light can be refracted into different colors using _____________

Elements combine to form millions of ______________

The forces that hold atoms together in combinations are called ____________

Every electron has a ____________

The exact positions of the electrons in an atom cannot be determined because electrons are always ____________

Compared with electrons that are closer to the nucleus, those that are farther away have _____________

The electrons that form bonds with other atoms are the __________

A neutral atom of an element has the same number of ______________

In the chemical formula H2O, how many atoms of oxygen are represented?

Which compound is a polar molecule?

A double covalent bond is created when _______________

Which activity makes an atom more stable when it is forming an ionic bond?

Which type of atom forms a flexible bond with other atoms of the same element by sharing a large pool of valence electrons?

A metallic bond forms when valence electrons move freely around a metal atom that has become a ____________

Which type of bond joins nonmetal atoms to nonmetal atoms?

Which is a property of covalent compounds?

An atom with _________valence electrons is most stable.

Which type of covalent bond is the strongest?

An ionic bond is formed between ___________