Unit 1 Review

What is the term for a mixture in which the different parts can be easily seen and separated?

• Pure substance

• Homogeneous mixture

• Heterogeneous mixture

• Solution

Which element is classified as a nonmetal on the periodic table?

• Iron

• Oxygen

• Silicon

• Gold

Which of the following is evidence that a chemical change has occurred?

• Melting of ice

• Dissolving sugar in water

• Production of a gas

• Breaking a glass

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which state of matter has particles that move freely and fill the entire volume of their container?

• Solid

• Liquid

• Gas

• Plasma

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is a homogeneous mixture?

• Salad

• Saltwater

• Sand and iron filings

• Trail mix

Which of the following is a property of metals?

• Brittle

• Poor conductor of electricity

• Shiny and malleable

• Dull and non-magnetic

Which of the following is NOT evidence of a chemical change?

• Change in color

• Change in shape

• Production of a precipitate

• Change in thermal energy

Tags

NGSS.MS-PS1-2

If a block of wood floats on water, what can you infer about its density compared to water?

• It is more dense than water

• It is less dense than water

• It has the same density as water

• It is not affected by density

Which group of elements is known for being good conductors of electricity and heat?

• Nonmetals

• Metalloids

• Metals

• Noble gases

Tags

NGSS.MS-PS3-3