Lesson 1.4 Review Quizizz

What is a chemical formula?

• A detailed description of a chemical reaction

• A shorthand way of writing a compound name

• A list of chemical properties

• A method to balance equations

In the example 2H2SO4, how many total oxygen atoms are there?

• 4

• 6

• 8

• 10

Tags

NGSS.MS-PS1-1

What is the law demonstrated by the equation: Mass of Reactants = Mass of Products?

• Law of Energy Conservation

• Law of Volume Conservation

• Law of Conservation of Mass

• Law of Temperature Conservation

Tags

NGSS.MS-PS1-5

What is necessary to show the conservation of mass in a chemical reaction?

• Increasing the number of products

• Balancing chemical equations

• Adding more reactants

• Changing the temperature

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the chemical equation 2Na + O₂ → 2NaO, what does the number 2 before Na represent?

• Subscript

• Coefficient

• Product

• Reactant

What is a common example of a combustion reaction? (Combustion means the process of burning something)

• Photosynthesis

• Burning of fossil fuels

• Rusting of iron

• Melting of ice

Tags

NGSS.MS-PS1-5

In a synthesis reaction, what happens?

• One compound breaks down into two or more substances

• Two or more substances combine to form one compound

• An atom replaces another atom in a compound

• Two compounds switch places

Tags

NGSS.MS-PS1-1

Which of the following is an example of a synthesis reaction?

• Water decomposing into hydrogen and oxygen

• Magnesium reacting with oxygen to form magnesium oxide

• Propane burning to produce energy

• Iron rusting in the presence of moisture

Tags

NGSS.MS-PS1-1

What is the main characteristic of a decomposition reaction?

• Two or more reactants form one product

• One compound breaks down into two or more substances

• An atom replaces another atom in a compound

• Two compounds switch places

What happens in a single replacement reaction?

• Two compounds switch places

• One element replaces another element in a compound

• Two or more substances combine to form one compound

• One compound breaks down into two or more substances