Which of the following is the major difference between an ionic bond and a covalent bond?

Covalent bonds share electrons while ionic bonds transfer electrons.

Covalent bonds transfer electrons while ionic bonds share electrons.

Covalent bonds are chemical bonds while ionic bonds are not.

Covalent bonds happen in metals; ionic bonds happen in non-metals.

Which of the following best describes an exothermic reaction?

Energy is created and destroyed.

Which of the following best describes an endothermic reaction?

Energy is created and destroyed.

Which of the following best describes a catalyst in a chemical reaction?

It speeds up the reaction without being consumed.

It increases the activation energy required.

It decreases the temperature of the reaction.

It is consumed during the reaction.

Which of the following is true about the Law of Conservation of Mass?

The total mass of reactants equals the total mass of products.

Mass is only conserved in physical changes.

Mass is not conserved in exothermic reactions.

Mass can be created or destroyed in a chemical reaction.

What describes a decomposition reaction?

A decomposition reaction involves the breakdown of a compound into simpler substances.

A decomposition reaction is a type of reaction that does not involve any chemical change.

A decomposition reaction involves the synthesis of complex compounds from simpler ones.

A decomposition reaction combines two or more substances into a single product.

What describes a single replacement reaction?

A reaction where one element replaces another in a compound.

A reaction where two compounds exchange elements.

A reaction where two elements combine to form a compound.

A reaction that involves the formation of a gas.

What describes a double replacement reaction?

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

A reaction that involves the combination of two elements to form a compound.

A reaction where one compound decomposes into two products.

A reaction where two compounds react to produce a single new compound.

Which of the following best describes a synthesis reaction?

A reaction where two or more substances combine to form a new compound.

A reaction where a compound breaks down into simpler substances.

A reaction where one element replaces another in a compound.

A reaction where two compounds exchange ions.

Which of the following best describes a combustion reaction?

A reaction where a substance combines with oxygen to release energy (h20 + CO2.)

A reaction that involves the formation of a gas.

A reaction where one element replaces another in a compound.

A reaction where two elements combine to form a compound.

What is a coefficient in a chemical equation?

A coefficient is a number placed before a chemical formula in a reaction to indicate the quantity of that substance.

A coefficient is the total mass of reactants in a chemical equation.

A coefficient represents the temperature of a reaction.

A coefficient is a type of chemical bond.

What is an acid/base reaction?

An acid/base reaction is a chemical process where an acid reacts with a base to produce water and a salt.

An acid/base reaction is a process that only produces gas.

An acid/base reaction involves two acids reacting with each other.

An acid/base reaction is a physical change that does not involve any chemical transformation.

What does the arrow in a chemical equation stand for?

The arrow represents the transformation of reactants into products.

The arrow indicates the temperature of the reaction.

The arrow shows the direction of the reaction only.

The arrow represents the catalyst used in the reaction.

Which of the following is an example of an Exothermic reaction ?

Combustion of fuels (e.g., burning wood or gasoline)

What happens to the missing mass in a chemical equation (Law of Conversation of Mass)?

The missing mass is accounted for by the reactants and products, as mass is conserved.

The missing mass is transformed into energy.

The missing mass disappears into thin air.

The missing mass is irrelevant to the reaction.

What does a subscript describe in a chemical equation?

A subscript describes the number of atoms of an element in a molecule.

A subscript indicates the type of chemical reaction.

A subscript shows the charge of an ion in a compound.

A subscript represents the molecular weight of a substance.

Chemical Reactions Quiz - Mr. Morgan

Authored by Jordan Morgan

Science

9th Grade

NGSS covered

Used 1+ times

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34 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

A chemical reaction takes place when

a substance mixes with another substance to form a heterogeneous mixture.

a substance changes from a solid to a liquid.

two or more substances are combined to form a new substance.

two or more substances are mixed together, and the new substance has the same properties as the old substance.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the compound MgO, which of the following statements are true?

Magnesium will lose 2 electrons, oxygen will gain 2 electrons.

Magnesium will lose 2 electrons, oxygen will gain 1 electron.

Magnesium and oxygen will both lose 2 electrons.

Magnesium and oxygen will form a covalent compound.

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Balance the following equation:

1, 2, 1, 2

3, 2, 3, 1

3, 1, 3, 1

1, 1, 1, 1

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is true about an ionic bond?

Electrons are transferred.

A cation combines with an anion.

A metal bonds with a non-metal.

All of the above.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Look at the equation below. According to the Law of Conservation of Mass, what would be the mass of Cl?

60g

100g

151g

141g

Tags

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is the appropriate name for this compound:

calcium dichloride

calcium chloride

monocalcium dichloride

calcium chlorine

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is the appropriate chemical formula for sodium iodide?

Tags

NGSS.MS-PS1-1

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