Elements, compounds, & mixtures 2019

Electrons are found in the

• nucleus of an atom

• energy levels of an atom

• with the protons

• outside of the energy levels

When elements form compounds, the elements

• keep their original properties

• react to form a new substance with new properties

• combine in a random way

• always change their physical state

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

All atoms of the same element contain the same number of

• electrons

• neutrons

• protons

Which of the following is a mixture?

• carbon dioxide

• sodium chloride

• air

• water

What particles make up a nucleus of an atom?

• electrons and neutrons

• neutrons

• electrons, protons, and neutrons

• protons and neutrons

The 3 major categories of elements are

• alloys, suspensions, and colloids

• metals, nonmetals, and metalloids

• solutions, mixtures, suspensions

• pure substances, compounds, and mixtures

Which of the following is heterogeneous?

• Kool-aid

• tap water

• chocolate chip ice cream

• whipped cream

When you wrap leftovers in aluminum foil, the foil is demonstrating its

• ductility

• solubility

• conductivity

• malleability

In soda, ______ is the solvent.

• carbonation

• water

• corn syrup

• caramel color

Which of the following is NOT a homogeneous mixture?

• chocolate milk

• tap water

• jello

• mayonnaise