Pre-AP Chemistry - Fall Semester Exam Review

What should you do before you start lab?

• Read all the procedures
• Make sure your work area is neat
• Get teachers permission
• All of the above

The smallest unit of an element that retains the properties of that element is called a(n)

• Element

• Compound

• Atom

• Molecule

Tags

NGSS.MS-PS1-1

Which of the following is NOT a pure substance?

• Element

• Compound

• Mixture

• Molecule

Which property of a substance is not affected by a physical change?

• Reactivity

• Size

• Position

• Shape

Which of the following is NOT a potential sign of chemical change?

• Change in odor

• Boiling

• Fizzing

• Change in color

Tags

NGSS.MS-PS1-2

Which of the following causes a chemical change?

• Moving

• Melting

• Burning

• Shattering

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is an element?

• Steel

• Brass

• Bronze

• Iron

Unlike a mixture, a pure substance has

• Atoms

• Molecules

• A specific size

• A fixed composition

Which of the following is an example of a chemical change?

• Ice melting

• Paint fading

• Pounding gold into a coin

• A puddle evaporating

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a homogeneous mixture?

• Diamond

• Milk

• Sulfuric Acid

• Iron