Patterns in Organisms and Nonliving Things (G7U2L1)

Which statement describes an example of a chemical property of a metal statue?

• It is solid.

• It is shiny.

• It is silver.

• It can tarnish.

Which of these is an example of a physical property?

• the fact that iron rusts

• the texture of a piece of chocolate

• the effect of acid rain on automobiles

• the fact that gasoline in a car engine combusts

Which of these is a chemical property of a sheet of paper?

• The paper can be burned.

• The paper can be crumpled.

• The paper does not attract a magnet.

• The paper does not conduct electricity.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Hydrogen gas (H₂) can be found in trace amounts in Earth’s atmosphere.

Which of these statements describes a physical property of hydrogen?

• Hydrogen is found in acids.

• Hydrogen gas is highly flammable.

• Hydrogen reacts with oxygen to form water.

• Hydrogen gas is less dense than oxygen gas.

Which properties describe all matter?

• All matter can be seen in nature.

• All matter has energy and temperature.

• All matter can be easily measured.

• All matter has mass and takes up space.

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties
• material properties

• real properties

Tags

NGSS.MS-PS1-2

A scientist has four samples of salt water. The salinity of each sample is listed in parts per thousand (ppt):

Sample 1 =  4.2 ppt

Sample 2 = 6.7 ppt

Sample 3 = 3.5 ppt

Sample 4 = 2.9 ppt

Each sample was made by dissolving 0.2 grams of salt in water. Which sample has the greatest volume of water?

• Sample 1

• Sample 2

• Sample 3

• Sample 4

Which statement best describes physical properties?

• Physical properties behave identically for all matter under the same conditions.

• Physical properties can be observed without changing the identity of a substance.

• Physical properties are observed by seeing how a substance reacts with other substances.

• Physical properties cause atoms and molecules to change structure when substances are mixed.

A scientist makes observations of a plains environment.

Which of the following is an example of a pattern that the scientist might look for?

• the seasonal migration of birds

• the random distribution of trees

• the unpredictable weather changes

• the unique shape of each leaf

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NGSS.MS-LS2-2

A scientist makes observations of a forest environment.

Which of the following is an example of a pattern that the scientist might observe?

• Plants need water and sunlight to survive.

• A particular animal is unusually large for its species.

• There are more animals and plants living close to water than further away.

• One type of plant becomes more common than the others.

Tags

NGSS.MS-LS2-2