Unit 5: Vocabulary

The Activity Series is a list of metals ranked in order of their ability to displace other metals from compounds. Which of the following metals is at the top of the Activity Series?

• Gold

• Silver

• Copper

• Potassium

Tags

NGSS.HS-PS1-2

An atom is the smallest unit of matter that retains the identity of the substance. Which of the following best describes an atom?

• A large molecule

• A small particle

• A chemical reaction

• A type of energy

Tags

NGSS.MS-PS1-1

Atomic mass is defined as the mass of which of the following?

• A single atom of a chemical element

• A molecule of a compound

• An electron

• A neutron

An Atomic Symbol is:

• a representation of an element using one or two letters

• a type of chemical reaction

• a unit of atomic mass

• a diagram of an atom's structure

Avogadro's Number is:

• 6.022 x 10^23

• 3.14

• 9.81 m/s^2

• 1.61 x 10^-19

A Chemical Formula is:

• a representation of a substance using symbols for its constituent elements.

• a detailed description of a chemical reaction.

• a method to calculate the molecular weight of a compound.

• a process to separate mixtures into pure substances.

Tags

NGSS.MS-PS1-1

What is a Chemical Equation?

• A representation of a chemical reaction using symbols of the elements and formulas

• A mathematical equation involving chemical elements

• A type of chemical bond

• A scientific law related to chemistry

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1

The definition of Coefficient in chemistry is:

• A numerical or constant quantity placed before and multiplying the variable in an algebraic expression.

• A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

• A number that appears in front of a chemical formula in a chemical equation, indicating the number of molecules or atoms involved in the reaction.

• A measure of the amount of matter in an object, typically in grams or kilograms.

Tags

NGSS.MS-PS1-5

A Combustion Reaction is a type of chemical reaction that involves the rapid combination of a substance with oxygen to produce heat and light. What is this type of reaction called?

• Decomposition Reaction

• Combustion Reaction

• Displacement Reaction

• Neutralization Reaction

Tags

NGSS.MS-PS1-5

Define the term Compound in chemistry.

• A substance formed when two or more chemical elements are chemically bonded together.

• A mixture of two or more substances that are not chemically bonded.

• A single element in its pure form.

• A solution of a solute dissolved in a solvent.