Physical Science Fall 24 Test

What type of change is burning classified as?

• Biological change

• Physical change

• Chemical change

• Mechanical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What occurs when a substance undergoes a chemical change?

• It becomes a gas

• It turns into a liquid

• A chemical reaction takes place

• It remains the same

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What does the law of conservation of mass state?

• Mass is created and destroyed in a chemical reaction.

• Mass is only destroyed in a chemical reaction.

• Mass is only created in a chemical reaction.

• Mass is neither created nor destroyed in a chemical reaction.

Tags

NGSS.MS-PS1-5

Fill in the blank: The substances that undergo change in a chemical reaction are called (a)   .

• Enzymes

• Reactants

• Products

• Catalysts

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the product formed when charcoal burns in the presence of oxygen?

• Carbon monoxide

• Methane

• Carbon dioxide

• Water

Tags

NGSS.MS-PS1-5

How is the chemical equation for the burning of charcoal written in chemical formulas?

• C + O₂ → CO₂

• C + O₂ → CH₄

• C + O₂ → CO

• C + O₂ → H₂O

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What does a chemical equation represent?

• A biological process

• A representation of a chemical reaction

• A mathematical formula

• A physical change in matter

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

How can the equation C + O₂ → CO₂ be read?

• Carbon and hydrogen react to form methane

• Carbon and oxygen form water

• Carbon dioxide decomposes into carbon and oxygen

• Carbon and oxygen react and form carbon dioxide

Tags

NGSS.MS-PS1-5

What does the law of conservation of mass state about chemical reactions?

• The mass of the products is less than the mass of the reactants.

• The mass of the products is unrelated to the mass of the reactants.

• The mass of the products is equal to the mass of the reactants.

• The mass of the products is greater than the mass of the reactants.

Tags

NGSS.MS-PS1-5

When charcoal burns, what is the relationship between the mass of carbon dioxide produced and the mass of the charcoal and oxygen that reacted?

• The mass of carbon dioxide is unrelated to the mass of charcoal and oxygen.

• The mass of carbon dioxide is less than the mass of charcoal and oxygen.

• The mass of carbon dioxide is greater than the mass of charcoal and oxygen.

• The mass of carbon dioxide is equal to the mass of charcoal and oxygen.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5