EarthSci Unit 2.10 Assessment

Two or more atoms joined together by chemical bonds are called a (a)   .

• molecule
• mixture

• element

• ion

A substance made of two or more different elements that chemically combine is called a(n) (a)   .

• isotope

• ion

• compound

What is the smallest particle of an element that still has the properties of that element?

• Atom

• Molecule

• Compound

• Sample

How many carbon atoms are there in C₃H₁₂O₅?

• 3

• 12

• 5

• 8

An atom of nitrogen loses one electron. This atom is now an ion of nitrogen with a charge of _____

• +1

• +7

• -1

• 0

A hiker looking for a challenging trail with a steep incline of elevation would be most interested in the (a)   of a topographic map.

• key

• contour lines
• latitude

• scale

In the modern Periodic Table of Elements, elements are arranged by ________________.

• atomic mass

• atomic number

• valence electrons

• number of isotopes

What is the name of the line pictured at zero degrees longitude?

• The equator

• The prime meridian

• The Eastern time zone

• The line of demarcation

What is the approximate latitude and longitude of Kingston, Jamaica?

• A. 18° N, 77° W

• B. 20.5° N, 70° W

• C. 78° N, 19.5° E

• D. 12°S, 80° W

Which state of matter is defined by having a definite volume but not a definite shape?

• Solid

• Liquid

• Gas

• Plasma