Unit B Test review

What type of property describes how a substance reacts when mixed with another substance?

• physical property

• chemical property

Tags

NGSS.MS-PS1-2

Which of the following are physical properties? (select all correct answers)

• reaction to acid

• number of bonds with hydrogen

• electrical conductivity

• density

Which of the following are chemical properties?(select all correct answers)

• reaction with acid

• electrical conductivity

• hardness

• temperature change when two liquids are mixed

Tags

NGSS.MS-PS1-2

Which property is least helpful when identifying a material?

• texture

• luster

• shape

• color

Which of the following are signs of a chemical reaction? (choose all correct answers)

• color change

• a precipitate (solid) forms in a liquid

• dissolving

• freezing

Tags

NGSS.MS-PS1-2

What happens to a molecule’s atoms during a chemical reaction?

• The atoms are destroyed

• New atoms form

• The atoms are rearranged and join to different atoms

• The atoms bubble and fizz

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What does a chemical reaction do to the substances’ properties?

• the properties change and the new substance that forms has new properties

• nothing happens to the properties

• nobody knows what happens

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which column of the Periodic Table contains the Noble gases?

• column 1 (on the left)

• column 4

• column 13

• column 18 (on the right)

How many ELEMENTS are in one molecule of sulfuric acid?

(see chemical formula above)

• 2

• 3

• 6

• 7

Tags

NGSS.MS-PS1-1

Which of the following describes elements ? (choose all correct answers)

• the atoms are all the same

• all elements are found in the periodic table

• at least two types of atoms must join together

• most are made in laboratories