STAAR BLITZ 1: PERIODIC TABLE AND COUNTING ATOMS,

A chemical formula is shown below. Label each part of the chemical formula. Write ONE correct answer in each box. 2Na2SO4

a

b

c

symbol

Coefficient

multiplier

postscript

subscript

How many total atoms are represented in THREE molecules of carbon dioxide?

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which elements are represented in the formula, and how many atoms of each element are represented in the formula?

• Hydrogen and Oxygen, 2 Hydrogen and 1 Oxygen

• Carbon and Oxygen, 1 Carbon and 2 Oxygen

• Sodium and Chlorine, 1 Sodium and 1 Chlorine

• Nitrogen and Hydrogen, 1 Nitrogen and 3 Hydrogen

Tags

NGSS.MS-PS1-1

How many more carbon atoms are represented in the formula for citric acid, C₆H₈O₇, than in the formula for acetic acid, CH₃COOH?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

Which element is most likely found on the left-hand side of the periodic table?

• Hydrogen

• Helium

• Carbon

• Oxygen

Which element is most likely found along the zigzag line on the periodic table?

• Carbon

• Oxygen

• Silicon

• Helium

Which element is most likely found on the right-hand side of the periodic table?

• Hydrogen

• Oxygen

• Sodium

• Iron

How are Metals and nonmetals differentiated?

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2