M2 - Cat A

Atoms form ions because they want to have a ____ outer shell.

Explain why chlorine and fluorine form covalent bonds

• They are both metals

• They are both non-metals

• One is a metal and one is a non-metal

• They are both semi-metals

Chose the compounds

• Sand

• Saline (salt water)

• Air

• Water

One hot summer, you remember you left a cup of water outside. A few weeks later, you saw that the cup was empty and you remember the cup having water. What happened to the water?

• It evaporated
• It underwent deposition
• It melted

What causes a change in the state of matter?

• physical properties
• chemical energy
• temperature

What do these isotopes of carbon all have in common?

• neutrons & mass number
• atomic number and neutrons
• atomic number and electrons
• protons, atomic number, and mass number

If the number of electrons in an atom changes you make a(n) __________________.

• ion
• isotope
• new element
• isomer

Change from Gas to Solid is called........

• Sublimation
• Deposition
• Fusion
• condensation

Covalent bonds are formed between

• Metals and Non-metals
• Two non-metals

• Two metals

Solutions, Suspensions and Colloids are all types of

• Chemical reactions
• Mixtures
• Elements
• Compounds