Science Map

The positive particles of an atom are 

• Electrons 

• Positrons 

• Neutrons 

• Protons 

Tags

NGSS.MS-PS1-1

Particles in an atom that are neutral and have no charge are ______. 

• Negatrons 

• Electrons 

• Neutrons 

• Protons 

The particles that are found in the nucleus of an atom are _____.

• Neutrons and electrons

• Electrons only

• Protons and neutrons

• Protons and electrons

Where are electrons of an atom found?

• Nucleus

• Electron Cloud

• Some are in the nucleus and some in the electron cloud.

• They are moving everywhere.

How many oxygen atoms are present in the following? 
4Ca(OH)₂

• 4

• 6

• 8

• 1

Tags

NGSS.MS-PS1-1

Why must we balance chemical equations? 

• Our teacher said so

• to abide by the law of conservation of energy

• to abide by the law of conservation of mass

Tags

NGSS.MS-PS1-5

Evidence of Chemical Change.

• New Substance 

• Size change

• State change

• Mixture 

Tags

NGSS.MS-PS1-2

Water boiling is a _______ change. 

• Physical Change 

• Chemical Change 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Fireworks Exploding are a ________ change.

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A chemical reaction accompanied by the absorption of heat. 

• Chemical Change

• Physical Change

• Endothermic Reaction

• Exothermic Reaction 

Tags

NGSS.MS-PS1-6