6th Grade Matter Unit Review

Alisa placed a small seashell on the pan of a balance. What other tool does she need to determine the density of the seashell?

• scale

• calculator

• thermometer

• graduated cylinder

Which of the following is a way in which elements and compounds are different?

• Elements are pure substances, but compounds are not.

• Compounds can be broken down by physical changes, but elements cannot.

• Elements are made of identical atoms, whereas compounds are made of identical molecules.

• A compound contains many different kinds of elements, whereas an element contains many different kinds of atoms.

Which of the following is NOT a pure substance?

• Element

• Compound

• Mixture

Check the physical properties that are common in metals:

• Dull

• Shine/Luster

• Malleability

• Brittle

• Conductivity

Which of the following is NOT an example of a physical change?

• a change in size

• a change in state of matter

• a new substance is created

• a change in shape

A chemical change is when two or more substance combines to create something new. Which of the following is an example of a chemical change?

• a gas is formed

• ice melts

• wood is chopped into small pieces

• paper is shredded

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The law of conservation of mass says that in physical or chemical changes, mass is neither _________ nor destroyed.

Tags

NGSS.MS-PS1-5

The formula for density is D = M/V. Find the density of a cup of gasoline with a mass of 10 grams and a volume of 7 mL.

• 13.6 g/mL

• 0.70 g/mL

• 70 g/mL

• 0.998 g/mL

Check the three groups of elements found on the periodic table.

• Nonmetals

• Metalloids

• Irons

• Solids

• Metals

Check the elements found in pure water.

• oxygen

• nitrogen

• iron

• hydrogen

• salt

Tags

NGSS.MS-PS1-1