Select the best answer for the element K: What is its name?

	potassium
	calcium
	krypton
	berkylium

2.

Select the best answerfor the element K: How many electrons does a neutral K atom have?

	19
	20
	36
	39

3.

Select the best answerfor the element K: Which element has similar chemical properties to K?

	Ca
	Na

4.

Select the best answerfor the element K: Is it a metal, metalloid, or nonmetal?

	metal
	metalloid
	nonmetal

5.

Select the best answerfor the element K: How many neutrons doesthe average elementhave? (round to the nearest whole number)

	19
	20
	44
	36

6.

Select the best answerfor the element K: How many protons does it have?

	36
	19
	20
	39

7.

Select the best answerfor the element K: Is this a transition metal, representative group, or inner transition metal?

	representative group
	transition metal
	inner transition metal

8.

Select the best answerfor the element K: What is its average atomic mass? (round to the nearest whole number)

	36
	19
	39
	84

9.

Select the best answerfor the element K: What is its atomic number?

	97
	39
	36
	19

10.

Select the best answer. A(n) _____ is a type of ion that carries a positive charge.

	cation
	group
	atomic mass
	anion

11.

Choose the best answer. This element family has one valence electron and is highly reactive with water.

	alkaline earth metal
	transition metal
	alkali metal

12.

Select the best answer. Which description best describes what happens in a period?

	Elements in this category have similar chemical and physical properties.
	Properties of elements gradually change across this category in apredictable way.

13.

Select the best answer. The number of protons in the atom of an element is called the _____.

	period
	atomic mass
	atomic number
	metals

14.

Select the best answer. This element family has two valence electrons and high melting points.

	alkali metals
	alkaline earth metals
	transition metals

15.

Select the best answer. A(n) _____ is an atom that gains or loses electrons.

	isotope
	ion
	metals
	cation

16.

Select the best answer. Elements in the same row in the periodic table are called a(n) _____.

	period
	group
	atomic number
	cation

17.

Select the best answer. Cesium can form ions with a +1 charge. Is it a cation or an anion?

	neither
	anion
	cation

18.

Select the best answer. A type of ion that carries a negative charge is called a(n) _____.

	nonmetals
	cation
	anion
	metals

19.

Select the best answer. The rough approximation of the number of protons and neutrons in the nucleus of an atom is called _____.

	cation
	metals
	atomic number
	atomic mass

20.

Select the best answer. Elements in the same column in the periodic table are called a(n) _____.

	group
	isotope
	cation
	nonmetals

21.

Select the best answer.

Elements that are good semiconductors and have properties between metals and nonmetals are called _____.

	isotopes
	metalloids
	metals
	cations

22.

Select the best answer.

Elements that are dull, brittle, often are gases at room temperature, and do not conduct heat and electricity well are _____.

	nonmetals
	metalloids
	periods
	metals

23.

Select the best answer. Which description best describes what happens in a group?

	Elements in this category have similar chemical and physical properties.
	Properties of elements gradually change across this category in apredictable way.

24.

Select the best answer.

A(n) _____ of an element is formed when there is the same number of protons but different numbers of neutrons.

	isotope
	cation
	ion
	atomic mass

25.

Select the best answer.

Elements that are shiny, malleable, ductile, most often solid at room temperature, and good conductors of heat and electricity are known as _____.

	cations
	metals
	metalloids
	nonmetals