Atoms and Chemical Formulas

Protons are located ___________.

• somewhere in space

• somewhere in an atom

• outside of an atom

• in the middle of an atom

Which of the following is a chemical formula ?

• Gold + Silver = Metal Alloys

• Nitrogen

• H₂O

• X² + Y² = Chemical Z x Chemical Z³

How many total atoms are in the compound C₂H₈O ?

• 11

• 2

• 8

• 1

Tags

NGSS.MS-PS1-1

The blue numbers in the image below are called ___________.

• compounds

• coefficients

• subscripts

• chemical formulas

What is the atomic number of an element?

• The number of protons in the nucleus

• The number of electrons around the nucleus

• The total number of protons and neutrons in the nucleus

• The total number of protons and electrons in an atom

What is the atomic number of an element?

• The number of protons in the nucleus

• The number of electrons around the nucleus

• The total number of protons and neutrons in the nucleus

• The total number of protons and electrons in an atom

What determines the chemical behavior of an atom?

• The number of protons

• The number of neutrons

• The number of electrons

• The position in the periodic table

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the atomic mass of an element?

• The number of protons in the nucleus

• The number of electrons around the nucleus

• The total number of protons and neutrons in the nucleus

• The total number of protons and electrons in an atom

Which element has the atomic number 1?

• Helium

• Hydrogen

• Oxygen

• Carbon

Number of C's in 2Na₂CO₃

• 1

• 2

• 3

• 5

Tags

NGSS.MS-PS1-1