Chemistry 1

The negatively charged subatomic particles that are located in energy levels around the nucleus

• Protons

• Neutrons

• Electrons

• Ions

Atoms tend to gain, lose, or share electrons in order to achieve a full outer energy level

• bohr model

• octet rule

• isotopes

• valance electrons

Tags

NGSS.HS-PS1-1

The outer most electrons of an atom

• valance electrons

• diatomic molecules

• bohr models

• isotopes

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Is the number of protons in an element

• atomic mass

• atomic number

• valance protons

• diatomic molecules

Is the protons plus the neutrons

• valance electrons

• atomic number

• atomic mass

• bohr diagram

Tags

NGSS.HS-PS1-8

The group number tells us how many _________ there are in an element.

• groups
• valence electrons
• energy levels
• chemicals

Tags

NGSS.HS-PS1-1

The ________________ tells you how many energy levels are used in an element.

• group number
• atom
• protons
• period number

The element Tellurium has the atomic mass of 127.60 and its atomic number is 52. How many neutrons are in the element Tellurium?

• 179.60
• 127.60
• 52
• 76

The inner energy level can only hold ______ electrons.

• 1
• 0
• 2
• 18

The characteristics or properties of metals include

• shiny and solid
• ductile and malleable
• lose electrons
• all of the above