10th Grade Biology Review

Which of the following is the chemical formula for Magnesium chloride?

• Cl₂Mg

• ClMg

• MgCl

• MgCl₂

How many electrons does the magnesium atom hold?

• 10

• 12

• 15

• 17

Tags

NGSS.HS-PS1-1

How many valence electrons does the magnesium atom hold?

• 0

• 1

• 2

• 3

Tags

NGSS.HS-PS1-1

Which Bohr's model represents magnesium?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-1

Match the correct ion type to the atom.

• element

• Chlorine

• cation

• Magnesium

• anion

• Argon

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the substance that forms when covalent bonds unit atoms?

• enzyme

• ion

• isotope

• molecule

Tags

NGSS.HS-PS1-1

What is the name of a protein that can catalyze a chemical reaction?

• enzyme

• ion

• isotope

• molecule

Tags

NGSS.HS-LS1-1

What is the name of an atom that has gained or lost an electron?

• enzyme

• ion

• isotope

• molecule

The center of an atom is known as a(n) ___________.

• control center consisting of protons and neutrons

• nucleus consisting of protons and neutrons

• control center consisting of protons and electrons

• nucleus consisting of protons and electrons

Using the pH scale, which substance is the strongest acid?

• Lemon

• Coffee

• Milk

• Baking Soda