Module 4 Assessment 1

Substances that undergo a chemical change are

• reactants

• products

• subscripts

• valence electrons

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

When oxygen and hydrogen combine to make water, the water molecule that they make is called the

• reactant

• chemical bond

• product

• ion

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Coefficients represent what part of a chemical formula?

• Number of individual atoms

• subscripts

• chemical symbols

• Number of whole molecules

Subscripts represent what part of a chemical formula?

• Number of whole molecules

• Number of individual atoms that make up a molecule

• reactants

• projects

True/False: In a chemical equation, the reactants are always written first (left side).

• True

• False

Which part of the atom is involved in chemical reactions?

• protons

• electrons

• neutrons

• valence electrons

Draw a Lewis Dot Structure for Neon

Which of the elements in the picture has correct electron dot notation?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1