Law of Conservation of Mass Quiz

What are chemical symbols used for?

• To describe the color of substances.

• To indicate the chemical symbol for each element.

• To show the size of elements.

• To measure the weight of substances.

Tags

NGSS.MS-PS1-5

How is a chemical symbol indicated?

• By a number.

• By a color.

• By a capital letter or a capital letter and a lowercase letter.

• By a shape.

What does the text suggest about the appearance of matter during a chemical reaction?

• It always looks the same.

• It might seem as if something is appearing or disappearing.

• It becomes invisible.

• It changes color.

Tags

NGSS.MS-PS1-2

What is the purpose of the periodic table in chemistry?

• To list the colors of elements.

• To list the chemical symbols of elements.

• To list the shapes of elements.

• To list the sounds of elements.

What does a chemical equation use to describe what happens in a chemical reaction?

• Words and sentences

• Chemical symbols and numbers

• Pictures and diagrams

• Colors and shapes

Tags

NGSS.MS-PS1-5

What information does a chemical equation provide? (Choose the incorrect option)

• The amount and type of elements involved

• The substances present before or after the reaction

• The temperature of the reaction

• What substances are involved in the reaction

Tags

NGSS.MS-PS1-1

What are the substances on the left side of a chemical equation called?

• Products

• Reactants

• Catalysts

• Solvents

Tags

NGSS.MS-PS1-1

What are the substances on the right side of a chemical equation called?

• Reactants

• Products

• Catalysts

• Solvents

Tags

NGSS.MS-PS1-5

What do coefficients in a chemical equation indicate?

• The number of atoms in a molecule

• The number of units needed or produced

• The type of reaction

• The temperature of the reaction

Tags

NGSS.MS-PS1-1

What do subscripts in a chemical formula tell us?

• The number of molecules

• The number of atoms of each element in a unit

• The type of reaction

• The temperature of the reaction

Tags

NGSS.MS-PS1-1