Chemistry Basics

What part of the atom is negative (-)?

• electrons

• protons

• neutrons

Tags

NGSS.MS-PS1-1

What part of the atom is neutral?

• electrons

• protons

• neutrons

How many protons does one atom of Beryllium have?

• 4

• 5

• 9

• 9.0122

Answer explanation

the atomic number (at the top of the square) is equal to the number of protons

Tags

NGSS.MS-PS1-1

How many electrons does one atom of Beryllium have?

• 4

• 5

• 9

• 9.0122

Answer explanation

the number of protons is equal to the number of electrons in a stable atom

Tags

NGSS.MS-PS1-1

How many neutrons does one atom of Beryllium have?

• 4

• 5

• 9

• 9.0122

Answer explanation

The neutrons are equal to the atomic mass minus the atomic number (round the mass to the nearest whole number so 9 - 4 = 5)

Tags

NGSS.MS-PS1-1

What is the atomic mass of Beryllium?

• 4

• 5

• 9

• 9.0122

Tags

NGSS.MS-PS1-1

Identify the following substance as either a compound, element, or mixture.

CuSO₄

• compound

• element

• mixture

Answer explanation

The chemical formula shows more than one element (more than one capital letter)

Tags

NGSS.MS-PS1-1

Identify the following substance as either a compound, element, or mixture.

C₆H₁₂O₆

• compound

• element

• mixture

Answer explanation

The chemical formula shows more than one element (more than one capital letter)

Tags

NGSS.MS-PS1-1

Identify the parts of the chemical equation shown here

• Products on the left, arrow means yield, Reactants on the right

• Products on the left, arrow means subtract, Reactants on the right

• Reactants on the left, arrow means yield, Products on the right

• Reactants on the left, arrow means subtract, Products on the right

Tags

NGSS.MS-PS1-2

What parts of the atom are in the nucleolus?

• electrons and protons

• protons and neutrons

• neutrons and electrons

Tags

NGSS.MS-PS1-1