8.P.1.3 and 4

When an Alka-Seltzer tablet reacts with water, the reaction is ______________________ because the temperature decreases.

• exothermic

• endothermic

• cancelled

• explosive

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Tarnish is a thin layer of ______________________ that forms on the surface silver, copper and aluminum when they are exposed to air.

• corrosion

• precipitate

• atoms

• elements

Tags

NGSS.MS-PS1-5

A burning candle is an example of an ______________________ reaction because energy is given off in the form of heat.

• corrosion

• endothermic

• exothermic

• exoskeleton

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

In a chemical equation, the ______________________ are listed on the left hand and the ______________________ are listed on the right.

• protons, neutrons

• reactants, products

• products, reactants

• nominator, denominator

A ______________________ change is characterized by the production of a new substance.

• chemical

• physical

• electrical

• weather

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

A ______________________ is a solid that is produced from a solution.

• solvent

• precipitate

• molecule

• compound

Water freezing is an example of ______________________ change because water and ice have the same molecular formula (H₂O).

• physical

• chemical

• electrical

• manual

Tags

NGSS.MS-PS1-4

A molecular formula shows the number and identity of the ______________________ found in a molecule.

• precipitates

• compounds

• isotopes

• elements

Tags

NGSS.MS-PS1-1

Flammability is a ______________________ property because when a substance burns, new substances are formed.

• new

• old

• chemical

• physical

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

______________________ forms when iron (Fe) reacts with molecular oxygen (0₂).

• Rust

• Ice

• Endothermic

• Exothermic

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2