Science Reinforcement

If a substance breaks easily, it is said to be ________________.

• Magnetic

• Conductive

• Brittle

• Ductile

When two objects move against each other is called__________.

• friction

• magnitude

• mass

The weight can be calculated by the formula ____________.

• mass * gravity

• mass / gravity

• gravity / weight

The moon’s gravity is ________of Earth’s gravity

• 1/2

• 1/3

• 1/6

The pH value of an acid is

• Less than 7

• More than 7

• Equal to 7

• Either less than 7 or more

Alkalis are

• salty in taste

• bitter in taste

• sweet in taste

• sour in taste

SI unit of Force is______________.

• Newton meter

• Force meter

• Newton

The pH scale indicates that

• how hot something is

• how long something is

• how acidic or alkaline something is

What does this warning symbol mean?

• Toxic

• Irritant

• Corrosive

The pH scale ranges from:

• 1-7

• 1-14

• 0-14

• 0-13