Final Review-Chemistry/Labs

In a ___________change, a substance changes into a different substance.

• Physical
• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A chemical change is different than a physical change because in a chemical change

• chemicals are used

• molecules do not physically touch

• a new substance is formed and in a physical no new substance is formed

• the change can be seen but in a physical change it cannot

Tags

NGSS.MS-PS1-2

When heated, like in the Flame Test, electrons are ____________.

• annoyed

• irritated

• excited

• angered

Flame tests are most useful for

• blood testing

• watching fireworks

• identification of elements

• none of the above

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

Tags

NGSS.MS-PS1-1

The positive particles of an atom are called ___________.

• electrons 
• atoms
• neutrons 
• protons 

electrons have this type of charge?

• negative
• positive
• neutral

Tags

NGSS.MS-PS2-3

These particles orbit around the nucleus of an atom.  What are they called?

• electrons
• protons
• neutrons
• photons

Tags

NGSS.MS-PS1-1