vocab test

What is a combustion reaction?

• A reaction in which two or more substances combine to form a more complex product.

• A reaction in which one element replaces another in a compound.

• A reaction where a substance reacts with oxygen, releasing energy in the form of heat and light.

• A reaction where two compounds exchange ions to form new compounds.

Tags

NGSS.HS-PS1-4

Which of the following describes a single replacement reaction?

• Two ionic compounds react to form two new ionic compounds.

• One element replaces another element in a compound.

• Two or more substances combine to form one product.

• A compound breaks down into two or more simpler substances.

What is a double replacement reaction?

• A reaction in which one element replaces another in a compound.

• A reaction in which two compounds exchange ions to form two new compounds.

• A reaction where one substance reacts with oxygen.

• A reaction in which a substance decomposes into two or more simpler substances.

A synthesis reaction is characterized by:

• Two or more substances combining to form a more complex product.

• A substance breaking down into simpler substances.

• One element replacing another element in a compound.

• A chemical change that involves the formation of a precipitate.

Tags

NGSS.MS-PS1-1

What happens during a decomposition reaction?

• One element replaces another in a compound.

• A compound breaks down into two or more simpler substances.

• Two or more substances combine to form a complex product.

• Two compounds exchange ions to form new compounds.

What is an ion?

• A negatively charged particle formed when an atom gains electrons.

• A positively or negatively charged atom or molecule.

• A type of bond between two nonmetals.

• A type of reaction where two compounds exchange ions.

What is dissociation in chemistry?

• The process of combining two atoms to form a molecule.

• The breaking up of a compound into ions when it dissolves in water.

• The formation of a precipitate.

• The exchange of ions between two compounds.

What does electronegativity refer to?

• The tendency of an atom to attract electrons in a chemical bond.

• The ability of an atom to release electrons.

• The strength of a bond between two atoms.

• The measure of an atom’s radius in a molecule.

Tags

NGSS.HS-PS1-1

What is an ionic bond?

• A bond formed by the sharing of electrons between two atoms.

• A bond formed by the transfer of electrons between a metal and a nonmetal.

• A bond formed between two nonmetals through mutual attraction.

• A bond that involves the equal sharing of electrons.

Tags

NGSS.HS-PS1-3

What is a precipitate in a chemical reaction?

• A substance that dissolves completely in water.

• A solid that forms and settles out of a liquid during a chemical reaction.

• A gas produced during a chemical reaction.

• A type of catalyst used to speed up a reaction.