Chemical Reactions

What type of a change is a chemical reaction?

• chemical

• physical

• typical

• biological

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a chemical change, products are created, or yielded, by

• reactants

• reactivity

• reaction

• reactate

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The number of atoms change in a chemical reaction.

• True

• False

Tags

NGSS.MS-PS1-5

What is NOT an example of a chemical reaction?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Reactivity means

• to be able to react easily.

• to separate after some time into different solutions.

• reacting with a meme.

• the loss of atoms.

Tags

NGSS.MS-PS1-2

The most reactive metals are

• alkali metals.

• super metals.

• strong metals.

• stiff metals.

The most reactive nonmetals are

• halogens.

• noble gases.

• biogens.

• noblegens.

What sign of a chemical change is shown?

• tarnish is formed

• forms a precipitate

• forms a gas

• energy is released

Tags

NGSS.MS-PS1-2

What sign of a chemical change is formed?

• Forms a gas

• Energy is released

• Forms a precipitate

• Temperature change

Tags

NGSS.MS-PS1-2

What sign of a chemical change is formed?

• Color changes

• Temperature changes

• Forms a precipitate

• Forms a gas

Tags

NGSS.MS-PS1-2