Question 1

Which of the following statements best describes the properties of metals as shown on the periodic table?

Accepted Answer

They are malleable, ductile, and have high melting and boiling points.

Question 2

Which of the following is a correct example of a homogeneous mixture?

Accepted Answer

Air

Question 3

What is the charge and location of a proton in an atom?

Accepted Answer

Positively charged, located in the nucleus

Question 4

Which of the following compounds contains a polyatomic ion?

Accepted Answer

NHNO

Question 5

A student mixes salt into water until it dissolves completely. What type of mixture is formed?

Accepted Answer

Homogeneous mixture

Question 6

Which element is most likely to form an anion?

Accepted Answer

Chlorine (Cl)

Question 7

Which of the following best describes noble gases?

Accepted Answer

They are located in column 8A/18 and have 8 valence electrons.

Question 8

Which of the following is a property of solids?

Accepted Answer

Particles are close together and have a definite shape.

Question 9

Which statement about electrons is correct?

Accepted Answer

Electrons are negatively charged and located outside the nucleus.

Question 10

Which of the following is a compound?

Accepted Answer

NH

Question 11

Which of the following best describes the difference between a compound and a mixture?

Accepted Answer

A compound has a fixed ratio of elements, while a mixture does not.

Question 12

Which of the following elements is most likely to lose electrons and form a cation?

Accepted Answer

Potassium (K)

Question 13

Which of the following is NOT a property of nonmetals?

Accepted Answer

High melting and boiling points

Question 14

Which of the following is an example of a heterogeneous mixture?

Accepted Answer

Chicken noodle soup

Question 15

Which statement about ionic compounds is correct?

Accepted Answer

They are formed by the transfer of electrons from metals to nonmetals.

Question 16

Which of the following best describes the location of metals on the periodic table?

Accepted Answer

Left hand side

Question 17

Which of the following is true about the atomic number of an element?

Accepted Answer

It equals the total number of electrons in a neutral atom.

Question 18

Which of the following elements is most likely to gain electrons and form an anion?

Accepted Answer

Fluorine (F)

Question 19

Which of the following is a property of liquids?

Accepted Answer

Particles are close together but can move past each other.

Question 20

Which of the following is a pure substance?

Accepted Answer

CH2O

Classification of Matter, Elements, Compounds, and the Periodic Table

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