A student pours a cloudy liquid through a thin piece of paper and into a beaker. The student observes the collected liquid is not cloudy. How should the student classify the original cloudy liquid?

• A as a mixture, because the cloudy liquid was separated by evaporation

• B as a mixture, because the cloudy liquid was separated by filtration

• C as a compound, because the cloudy liquid was separated by evaporation

• D as a compound, because the cloudy liquid was separated by filtration

Tags

NGSS.MS-PS1-2

Wendy draws this model to represent a neutral beryllium (Be) atom.

Wendy’s teacher says there is an error in her model. What is the error?

• The model has too many protons.

• The model has too many electrons.

• The model shows protons in the wrong location

• The model shows electrons in the wrong location.

Tags

NGSS.MS-PS1-1

How are the properties of helium (He) and krypton (Kr) similar?

• Both are non-reactive gases at room temperature.

• Both are non-reactive liquids at room temperature.

• Both are reactive gases at room temperature.

• Both are reactive liquids at room temperature.

Each column of this table displays the properties of an element.

Use the periodic table on page 33 of the EOG Success book to help identify each of the elements:

Column 1:
State of Matter at Room Temperature: solid
Reactivity: very reactive
Element Name: ________

• lithium (Li)

• argon (Ar)

• fluorine (F)

Tags

NGSS.MS-PS1-1

Each column of this table displays the properties of an element.Use the periodic table on page 33 of the EOG Success book to help identify each of the elements:

Column 2:
State of Matter at Room Temperature: gas
Reactivity: not reactive
Element Name: ________

Which element correctly fits the description for Column 2?

• argon (Ar)

• fluorine (F)

• lithium (Li)

Each column of this table displays the properties of an element.

Use the periodic table on page 33 of the EOG Success book to help identify each of the elements:

Column 3:

State of Matter at Room Temperature: gas

Reactivity: very reactive

Element Name: ________

• fluorine (F)

• argon (Ar)

• Lithium (Li)

Tags

NGSS.MS-PS1-1

Methane is a pure substance and exists as a gas at room temperature. Each methane molecule is made up of one carbon atom chemically bonded to four hydrogen atoms. How is methane classified?

• as an element

• as a compound

• as a homogeneous mixture

• as a heterogeneous mixture

Tags

NGSS.MS-PS1-1

An unidentified pure solid is composed of an element. The substance is metallic and reacts vigorously when placed in water. Where is this element most likely found on the periodic table?

• at the top of the periodic table

• at the bottom of the periodic table

• on the left side of the periodic table

• on the right side of the periodic table