Chemistry

What are the building blocks of MATTER?

• Atoms
• Cells
• Protons
• Neutrons

Tags

NGSS.MS-PS1-1

A substance made of atoms of two or more elements that have combined chemically.

• compound
• matter
• volume
• chemical change

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.

Which of the following is a positively charged subatomic particle found in the nucleus of an atom?

• Electron
• Proton
• Neutron
• Quark

An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?

• 15

• 31

• 16

• 47

Tags

NGSS.MS-PS1-1

What carries no charge 

• Neutrons
• Electrons
• Protons

What is an ion?

• A Charged Atom
• A Large Atom
• A Small Atom
• A Cute Atom

Tags

NGSS.MS-PS1-1

What is an isotope? 

• A charged atom
• An atom with different amounts of neutrons
• An atom with different amounts of protons
• A neutral atom

Tags

NGSS.HS-PS1-8

Different isotopes have...

• different masses
• different atomic numbers
• different electrons
• different protons

Tags

NGSS.MS-PS1-1

How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.

Tags

NGSS.HS-PS1-1