Blitz Day 1 - Periodic Table and Counting Atoms

Periodic Table and Counting Atoms
6.6C
7.6C

Focus

We will have 10 Days of Blitz to review concepts that will be tested.
Our Science 8 STAAR Test is April 16th!!

10 Day Blitz Review

STAAR Blitz Day 1

Multiple Choice

How many atoms of Hydrogen are in H₂O

• 1

• 2

• 3

• more than 3

Multiple Choice

How many different elements are present in H₂COCH₂

• 5

• 4

• 3

• 2

Multiple Choice

What is the subscript in the formula?

• 2

• N

• H

• 3

Multiple Choice

Coefficients tell the number of __________ in a formula.

• Molecules

• Atoms

• Elements

• Oxygen

Multiple Choice

Which chemical formula below indicates that you have three molecules of water $$H_2O$$  ?

• $$3H_2O$$  

• $$H_6O_3$$  

• $$6HO$$  

• $$H_2O$$  

Multiple Choice

$$5Br_2\left(PO_3\right)OH$$  

In this chemical formula, which number represents the coefficient (the number of molecules)?

• 5

• 2

• 3

• 1

Multiple Choice

2H₂O
How many H₂O molecules are present?

• 1
• 4
• 2
• 8

Multiple Choice

How many atoms are in this formula: Zn(NO₃)₂

• 3

• 5

• 9

• 7

Multiple Choice

What is the correct total number of atoms for 4Ag(NO₃)₂

• Ag = 4 N = 2 O = 6

• Ag = 4 N = 4 O = 6

• Ag = 4 N = 8 O = 24

• Ag = 1 N = 2 O = 6

Multiple Choice

Which of these is a property of metals?

• It's malleable
• It can't conduct electricity
• They are used in food
• It's very brittle

Multiple Choice

When an object changes shape when struck by a hammer it is said to be...

• luster

• malleable

• brittle

• ductile

Multiple Choice

Which property explains why copper is often used in electric wiring?

• density

• mass

• volume

• conductivity

Multiple Choice

What kind of densities do metals have?

• high

• medium

• low

Multiple Choice

Except for mercury, all metals are ________________ at room temperature.

• solids

• liquids

• gases

• plasma

Multiple Choice

Look at the periodic table that is provided. Where would metalloids be located?

• to the left of the table 
• to the right of the table 
• in the zigzag line 

Multiple Choice

Which element is a metalloid?

• Titanium
• Selenium
• Potassium
• Polonium

Multiple Choice

At room temperature nonmetals are generally ____________.

• plasma

• gases

• liquid

• solid

Multiple Choice

Non-metals are good conductors of heat and electricity. 

• TRUE
• FALSE