Which metal reacts with oxygen to form a dull black compound?

• Iron
• Aluminium
• Copper
• Magnesium

What correctly describes the nucleus of an atom?

• protons and electrons
• neutrons and electrons
• neutrons and protons
• protons, electrons, and neutrons

Tags

NGSS.MS-PS1-1

Reactivity is a(n) ________property of Metal

• Chemical Property
• Physical Property

Tags

NGSS.MS-PS1-2

Which of the following is NOT a clue that a chemical change has occurred?

• change in color
• production of gas
• change in termperature
• change in shape

Tags

NGSS.MS-PS1-2

What is Reactivity?

• The characteristics of a substance that can be observed without changing the identity of the substance.
• A property making a substance react with certain substances
• When a substance combines with another to form a new substance.
• I really don't know at all.

Tags

NGSS.MS-PS1-2

The family in the periodic table that contains the most reactive metals is the_______

• Alkaline Earth Metals
• Transition Metals 
• Alkali Metals
• Other Metals

Gold, which is in Group 11 on the periodic table, is an example of a(n) ____________

• Alkali Metal 
• Other Metal 
• Transition Metal
• Alkaline Earth Metal

Reacts with metals to form H₂.

• Acids
• Bases
• All
• Salts

Complete the equation below. 
Iron + Oxygen --> 

• Iron oxygen
• Iron oxide
• Iron oside
• Ion oxide

Tags

NGSS.HS-PS1-2

Which metal oxide is shown being formed here?

• Copper oxide
• Aluminium oxide
• Iron oxide
• Magnesium oxide