Science STAAR Day

 How does the mass of location y compare to the mass at location x? 

• Location y has a mass multiple thousand times larger than location x. 
• Location y has a mass only slightly larger than location x. 
• Location x and y have the same mass.
  
• Location x has a mass twice as large as location y. 

 What are the names of the two subatomic particles located at y? 

• protons and electrons 
• neutrons and protons 
• neutrons and electrons 
• protons and neutrinos 

Tags

NGSS.HS-PS1-8

Which of the particle in the chart below is a neutron?

• Particle A
  
• Particle B
  
• Particle C
  
• None of the above 

Tags

NGSS.MS-PS1-1

In question 5, what identifies the atom on the left as sodium (Na)? 

• Sodium always has an equal balance of neutrons and electrons. 
• No other atom can have only one valence electron. 
• Only sodium can chemically react and bind with chlorine. 
• Sodium is the only element with 11 protons. 

Tags

NGSS.HS-PS1-1

Which of these atoms will be more reactive and why? 

• Atom A, because it has fewer electrons.
  
• Atom A, because it has unequal charges.
  
• Atom B, because it gives up a valence electron. 
• Atom B, because it more neutrons. 

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The tendency of an element to react with other elements to produce compounds. 

• Chemical change
• Neutrality
  
• Reactivity
  
• Valence 

Tags

NGSS.HS-PS1-1

A subatomic particle that has almost no mass and a negative charge.

• Electricity
• Proton
• Electron
  
• Neutron

The number of protons in the atoms of a particular element that is unique only to that element.

• Atomic Mas
• Atomic Number
  
• Proton Number
• Mole 

A positively charged subatomic particle located in the nucleus and has an atomic mass of 1.

• Neutron
• Valence
• Proton
  
• Electron

A collection of orbitals around the nucleus, each having its own energy level. 

• Proton Shells 
• Electron Shells
  
• Orbital Shells
• Nucleic Shells