The diagram on the far left shows the moving particles of a gaseous material within a rigid container. Which of the three boxes on the right best represents this material upon the addition of heat?

Box C, because it shows how the particles expand upon the addition of heat.

Box A, because it shows the gas particles rising upon the addition of heat.

Box B, because it shows the gas particles moving faster.

All three of these boxes show accurate representations of what happens to the particles within this rigid container upon the addition of heat.

Evaporation is a cooling process and condensation is

neither a warming nor cooling process.

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

gasoline being used in the engine of a car producing exhaust

water freezing into ice crystals

aftershave or perfume on your skin generating a smell

a piece of metal expanding when heated, but returning to original size when cooled

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

water boiling and being converted into steam

water being electrolyzed and being converted in hydrogen and oxygen

iron metal reacting with oxygen to form rust

a candy bar being digested by a student

charcoal being converted into ash

What is the valence shell?

It is the last partially filled orbital in an atom.

It is the outermost shell of electrons in an atom.

It is the shell of electrons in an atom that is the least reactive.

It is the shell of electrons in element V (atomic no. = 23)

It is the same as the orbital configuration.

An atom loses an electron to another atom. Is this an example of a physical or chemical change?

chemical change involving the formation of ions

physical change involving the formation of negative ions

chemical change involving the formation of neutral atoms

physical change involving the formation of positive ions

Which of the following best describes ionic bonding?

one atom giving up some of its electrons to another atom

two atoms sharing a set of electrons

two atoms exchanging a set of electrons

when two elements with same charge are held together by electrostatic forces

A chemical reaction occurs:

when one or more new compounds are formed by rearranging atoms

when a new element is formed by rearranging nucleons

when two solids mix together to form a heterogeneous mixture

when two liquids mix to form a homogeneous mixture

when a liquid undergoes a phase change and produces a solid

What is a chemical equation?

It is a shorthand notation for illustrating a chemical reaction.

It is the sum of the masses of the products and reactants.

It is the chemical combination of equal numbers of reactants and products.

It is a picture of the atoms undergoing a chemical equalization.

It is any type of reaction that takes place at the equator.

Given the following generic chemical reaction, which is the reactant?

Both X and Y are the reactants.

What is an exothermic reaction?

It is a reaction that requires heat as a reactant.

It is a reaction where the products have more energy than the reactants.

It is a reaction where there is a net loss of energy from a reaction.

What is an endothermic reaction?

It is a reaction where there is a net absorption of energy from a reaction.

It is a reaction that requires heat as a reactant.

It is a reaction where the products have more energy than the reactants.

What is a reaction rate?

It is the speed at which reactants are consumed or product is formed.

It is the balanced chemical formula that relates the number of product molecules to reactant molecules.

It is the ratio of the masses of products and reactants.

It is the ratio of the molecular masses of the elements in a given compound.

What is the activation energy?

the minimum amount of energy to break the bonds in reactants

the amount of energy required to activate a phase change

the energy difference between the reactants and the products

the amount of energy required to separate reactants from the products

Which of the following solutions is the most acidic?

all of the solutions are basic.

Which of the following solutions is neutral?

All of the solutions are basic.

What is the primary function of neutrons in an atom?

To provide mass to the atom without adding charge

To generate electrical energy within the atom

To repel electrons and keep them in orbit

To attract protons and maintain the nucleus structure

Which of the following is a characteristic of ionic bonds?

Transfer of electrons from one atom to another

Sharing of electron pairs between atoms

Equal distribution of electrons in the outer shell

Formation without the involvement of valence electrons

Chemistry Benchmark Review

Authored by Brian Parsons

Science

10th Grade

NGSS covered

Used 5+ times

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49 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Unstable atomic nuclei have an imbalance of

Protons and electrons

Electrons and neutrons

Neutrons and electrons

Protons and neutrons

Tags

NGSS.HS-PS1-8

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where does most of the radiation we encounter come from?

Tanning beds

Cosmic rays from other planets

Cosmic rays from the sun and the stars

Only the stars

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Alpha particle

Carries a negative electric charge

Carries a positive electric charge

Is a non-visible high energy light wave

Is two electrons stuck together

Tags

NGSS.HS-PS1-8

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A Beta particle

Carries a negative electric charge

Carries a positive electric charge

Is a non-visible high energy light wave

Carries no charge at all

Tags

NGSS.MS-PS2-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A gamma ray

Carries a negative electric charge

Carries a positive electric charge

Is a non-visible high energy light wave

Is two electrons stuck together

Tags

NGSS.MS-PS4-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When an element ejects an alpha particle the atomic number of the resulting element

Reduces by 2

Reduces by 4

Increases by 2

Increases by 4

Tags

NGSS.HS-PS1-8

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Determine the number of protons and neutrons of Radon-200

P-100, N-100

P- 86, N-114

P-2, N-00

P-86, N-200

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Chemistry Benchmark Review

Unstable atomic nuclei have an imbalance of

Where does most of the radiation we encounter come from?

Alpha particle

A Beta particle

A gamma ray

When an element ejects an alpha particle the atomic number of the resulting element

Determine the number of protons and neutrons of Radon-200

Platinum-182 has a half-life of 3 minutes. How many grams of a 120 gram sample will be left after 3 half-lives?

Which of the following can be classified as matter?

Chemistry is the study of

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