EOG Review Science

Which is classified as an element?

• carbon dioxide

• iron

• vinegar

• water

Which best describes the sequence o the elements in Period 5 of the periodic table?

• highly reactive gases, relatively non reactive metals, metalloids, very nonreactive gases, nonreactive nonmetals

• highly reactive metals, relatively nonreactive metals, metalloids, reactive nonmentals, reactive gases

• nonreactive gases, metalloids, nonreactive metals, highly reactive metals, highly reactive gases

• nonreactive gases, nonreactive metals, highly reactive metals, metalloids, reactive nonmetals, reactive gases

Chlorine has 7 valence electrons. With what group of elements will chlorine most readily bond?

• group 1

• group 2

• group 16

• group 18

Which is the best example of a chemical change?

• butter melting

• egg cooking

• paper tearing

• water evaporating

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which chemical equation best represents the Law of Conservation of Mass?

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is Natural Selection?

• The process were only plants better adapted to their environment tend to survive and produce more offspring.

• The process were only humans better adapted to their environment tend to survive and produce more offspring.

• The process were individuals better adapted to their environment tend to survive and produce more offspring.

• The process were organisms better adapted to their environment tend to survive and produce more offspring.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

What is the definition of CONVECTION

• When heat transfers through waves.

• When heat transfers from objects that are touching.

• a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.

• Heat traveling from the sun

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

The chart that arranges elements by atomic number is:

• Atomic Number

• Metal

• Periodic Table

• Chart

The smallest unit of an element that still has the properties of that element is:

• Proton

• Nonmetal

• Atomic number

• Atom

How are compounds and elements different?

• Elements are metals; compounds are nonmetals

• Elements are pure substances; compounds are not

• Elements exist as solids, liquids, and gases; compounds are solids

• Elements have one kind of atom; compounds have different kinds of atoms