6th Grade Science Semester Review

When the metal magnesium (Mg) is burned in the presence of the nonmetal oxygen (O₂), a white light and an increase in temperature occurs to produce a white-powdery substance called magnesium oxide (MgO).

Which answer choice best describes the pure substance magnesium oxide (MgO) that was produced?

• an element

• a mixture

• a solution

• a compound

Tags

NGSS.MS-PS1-1

Which model most likely represents the chemical structure classified as a pure substance that is an element?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

The data table shows the recorded observations of four different substances when combined with water.

Based on the recorded observations, which substances indicate evidence that a chemical change occurred?

• Substances I and II

• Substances I and III

• Substances I , II, and III

• Substances II and IV

Tags

NGSS.MS-PS1-2

Which is NOT evidence of a chemical change?

• Color change

• temperature change

• formation of precipitation

• broken pieces

Tags

NGSS.MS-PS1-2

Which answer choice best describes an example of a chemical change?

• A baseball hitting a roof.

• The roof of the car denting.

• Paint cracking and chipping.

• Exposed metal rusts.

Tags

NGSS.MS-PS1-2

Matter is anything that takes up space

• true

• false

A fruit salad is a homogeneous mixture

• true

• false

When a rubber band stretched it has____ energy

• nucular

• potential

• kinetic

• chemical

Tags

NGSS.MS-PS3-2

A green plant has _____ energy

• Chemical

• Nuclear

• Thermal

• Jeremiah

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

another name for a homogeneous mixture is A______

• Micheal

• solution

• math

• red monkey