Chemistry Test Review

Metalloids

• Yellow

• Blue

• Red

• Purple

What is the left part of a chemical equation called?

2H2 + O2 ---> 2H2O

• reactants

• products

• yields

• chemical equaitons

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂ --> 2Al₂ O₃

• 2

• 6

• 1

• 4

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

What is the right part of a chemical equation called...
2H_{2 +} O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

The small numbers in a chemical formula:

(the BLUE numbers)

• Subscripts

• Coefficients

• Numbers

• Molecules

Tags

NGSS.MS-PS1-1

Balance this equation:

H2 + Cl2 ---> HCl

• It is balanced.

• H2 + Cl2 ---> 2HCl

• 3H2 + Cl2 ---> 6HCl

• H2 + 3Cl2 ---> 6HCl

Tags

NGSS.MS-PS1-5

Neon (Ne) is a(n) -

• Alkali metal

• Alkaline earth metal

• Noble gas

• Metalloid

Boron (B) is a(n) -

• Alkali metal

• Alkaline earth metal

• Noble gas

• Metalloid

Sodium (Na) is a(n) -

• Alkali metal

• Alkaline earth metal

• Noble gas

• Metalloid

Magnesium (Mg) is a(n) -

• Alkali metal

• Alkaline earth metal

• Noble gas

• Metalloid