Unit 1,2,3 Review

What is the smallest unit of matter?

• atom
• proton
• neutron
• electron

Where are electrons located?

• Inside the nucleus
• Inside the protons
• Electron cloud
• Neutron cloud

In the atom, where do I find the atomic nucleus?

• electron cloud
• outside the atom
• at the center
• valence sphere

How many protons does a zinc atom have (See the picture below)

• 3
• 30
• 65
• 12

If the number of protons equals the number of electrons, what charge does the atom have?

• psoitive
• no charge/neutral
• negative
• all of the above

If the number of protons does not match the number of neutrons, what describes the atom?

• proton
• neutron
• electron
• isotope

If the number of protons does not match the number of electrons, what describes the atom?

• proton
• neutron
• electron
• ion

Which part of an element key shows the number of protons in an element's nucleus?

• atomic mass
• chemical symbol
• state of matter
• atomic number

What is the periodic table?

• a chart of the elements
• a grouping of elements by their properties
• a tool for predicting elemental properties
• all of the above

What information can I find on each element key?

• atomic masss
• atomic number
• atomic symbol
• all of the above

Tags

NGSS.MS-PS1-1