Physical and Chemical Changes Test

Silver tarnishes when it comes in contact with hydrogen sulfide in the air. Is this a physical property or a chemical property?

• Physical Property

• Chemical Property

Tags

NGSS.MS-PS1-2

A banana is yellow. Is this a physical property or a chemical property?

• Physical Property

• Chemical Property

A sheet of copper can be pounded into a bowl. Is this a physical property or a chemical property?

• Physical Property

• Chemical Property

Gasoline is flammable. Is this a physical property or a chemical property?

• Physical Property

• Chemical Property

• Physical Property

• Chemical Property

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Sodium and chlorine are two reactive and dangerous elements.  Chlorine is a halogen gas that can cause respiratory damage and sodium is an alkali metal that reacts violently with water.  What happens to the properties of sodium and chlorine when they react to form sodium chloride (NaCl), common table salt?

• The properties of both sodium and chlorine change.

• The properties of both sodium and chlorine remain the same.

• The properties of sodium are different but chlorine remains a dangerous gas. 

• The properties of sodium remain the same but the properties of chlorine change. 

   

Tags

NGSS.MS-PS1-2

Which action will result in a product with new chemical properties? 

• Shredding a newspaper

• Breaking a mirror

• Cutting wood

• Popping popcorn

Tags

NGSS.MS-PS1-2

Students make a model of a volcano using a tray, a small paper cup, clay, baking soda, food coloring, dish soap and vinegar (acetic acid).  First, they placed the paper cup on a large tray and covered the cup with clay to make it look like a volcano.  Then, the students placed baking soda into the cup.  Next, they added food coloring and dish soap to vinegar.  Finally, the students poured the vinegar mixture into the clay.  Immediately, bubbles and foam erupted from the model volcano.  The students observed the model and recorded their observations of the changes in the substances that made the model volcano.  A chemical property of baking soda demonstrated in this investigation is that baking soda  _________. 

• reacts with vinegar (acetic acid)

• reacts with oxygen

• forms during an acid-base reaction

• forms during the decomposition of water

Tags

NGSS.MS-PS1-2

The following table shows properties of four different sample materials.  One of these materials is cork, a type of wood that floats in water.  Given that the density of water is 1 g/mL, which of the samples is most likely cork? 

• Sample 1

• Sample 2

• Sample 3

• Sample 4

Tags

NGSS.MS-PS1-2

The data table below lists some of the properties of matter. How do the properties of the elements compare with the properties of cellulose? 

• The physical and chemical properties of the elements are mostly different from the physical and chemical properties of cellulose. 

• The physical and chemical properties of the elements are mostly the same as the physical and chemical properties of cellulose. 

• The physical properties of the elements and cellulose are mostly different, but their chemical properties are mostly the same. 

• The physical properties of the elements and cellulose are the mostly the same, but their chemical properties are mostly different. 

Tags

NGSS.MS-PS1-1