SCI101H

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

Tags

NGSS.MS-PS1-1

The characteristics or properties of metals include

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

^{_{Is the Bohr Model for the element Selenium (Se) correct?}}

• yes
• no

Tags

NGSS.MS-PS1-1

^{_{Is this a correct representation of the Bohr Model for Sodium (Na)?}}

• no
• yes

Tags

NGSS.MS-PS1-1

Which particle does not contribute mass to the atom?

• Proton
• Neutron
• Electron
• Nucleus

Tags

NGSS.HS-PS1-7

Which particle contributes the negative charge to the atom?

• proton
• electron
• neutron
• nucleus

Water is an element?

• true
• false

Most of the mass in an atom is made up of _____________________?

• protons and electrons
• protons and neutrons
• neutrons and electrons
• electrons and quarks

Tags

NGSS.MS-PS1-1