Q3- CompSci2 Study Guide

Label the following element from the periodic table:

a

b

c

d

Element Name

Atomic Mass

Atomic Number

Chemical Symbol

The number of protons is ​ (a)   the ​ (b)   .

• equal to
• atomic number
• less than
• greater than
• chemical symbol
• atomic mass

How many protons does nickel have?

Mathematical Equivalence

ON

Tags

NGSS.MS-PS1-1

How many electrons does nickel have?

Mathematical Equivalence

ON

Tags

NGSS.MS-PS1-1

How many neutrons does beryllium have?

Mathematical Equivalence

ON

Tags

NGSS.MS-PS1-1

Which of the above figures best represents the depiction of an element?

• figure W

• figure X

• figure Y

• figure Z

Tags

NGSS.MS-PS1-1

Which of the figures above best represents the depiction of a compound?

• figure W

• figure X

• figure Y

• figure Z

Tags

NGSS.MS-PS1-1

When magnesium (Mg) metal is burned in the presence of oxygen gas (O₂), magnesium oxide (MgO) is produced. The properties of magnesium oxide are different from the individual properties of magnesium and oxygen because magnesium oxide is

• a solution

• a mixture

• a compound

• an element

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

All of the following are pure substances except…

• water (H₂O)

• air

• table salt (NaCl)

• table sugar (C₆H₁₂O₆)

What is another name for a solution?

• homogeneous mixture

• heterogeneous mixture

• substance

• compound