Quiz about 1st Semester Science Final Review I

Question 1

Which of the following statements is true about electrons?

Accepted Answer

Adding or removing an electron from an atom changes the net charge.

Answer

Adding or removing an electron from an atom changes the atomic mass.

Answer

Adding or removing an electron from an atom changes the type of chemical element.

Answer

Electrons are located in the nucleus of an atom.

Question 2

An atom can have a charge when the _____ number changes.

Accepted Answer

electrons

Answer

nucleus

Answer

neutrons

Answer

protons

Question 3

How many neutrons does the element on the periodic square have?

Accepted Answer

5

Answer

4

Answer

9

Answer

Not possible to determine

Question 4

Ionization energy is _____.

Accepted Answer

The amount of energy required to remove an electron from an atom or ion.

Answer

The amount of energy released when an electron is added to an atom or ion.

Answer

The amount of energy required to add an electron to an atom or ion.

Answer

The amount of energy required to break a chemical bond.

Question 5

Atomic radius on the periodic table _____.

Accepted Answer

Decreases from left to right across a period.

Answer

Remains constant from top to bottom within a group.

Answer

Increases from left to right across a period.

Answer

Decreases from top to bottom within a group.

Question 6

Photosynthesis is how plants make _____.

Accepted Answer

glucose

Answer

oxygen

Answer

water

Answer

carbon dioxide

Question 7

Ca will form a Lewis dot diagram with _____ electrons.

Accepted Answer

2

Answer

4

Answer

6

Answer

8

Question 8

Which of the following shows the elements in order from smallest to largest atomic mass?

Accepted Answer

Cl, K, Br, Rb

Answer

Rb, Cl, K, Br

Answer

K, Br, Rb, Cl

Answer

Br, Cl, Rb, K

Question 9

How do you estimate the atomic mass of an atom?

Accepted Answer

By adding the number of protons and neutrons in the nucleus of the atom.

Answer

By adding the number of electrons and protons in the nucleus of the atom.

Answer

By subtracting the number of electrons from the number of protons in the nucleus of the atom.

Answer

By multiplying the number of protons and electrons in the nucleus of the atom.

Question 10

Which of the following has the highest ionization energy?

Accepted Answer

Fluorine (F)

Answer

Aluminum (Al)

Answer

Strontium (Sr)

Answer

Barium (Ba)

Question 11

Which type of reaction is pictured?

Accepted Answer

endothermic

Answer

exothermic

Answer

covalent

Answer

ionic

Question 12

Which of the following is a nonmetal?

Accepted Answer

Oxygen (O)

Answer

Sodium (Na)

Answer

Iron (Fe)

Answer

Zinc (Zn)

Question 13

The graph depicts the radii trends of the periodic table.

Which elements are in the same periodic family (group) based on this graph?

Accepted Answer

Na and K

Answer

F and K

Answer

Cs and Po

Answer

Na and Br

Question 14

The chemical reaction between lithium and chlorine are reprsented below:

2Li + Cl₂ -------> 2 LiCl

Which statement below best explains why the reaction takes place?

Accepted Answer

The valence electrons of lithium and chlorine are shared in an ionic bond.

Answer

Lithium shares a valence electron with chlorine to form a positively charged compound.

Answer

Chlorine an share some electrons with lithium to form a covalent bond.

Answer

The attractive forces between lithium and chlorine are so strong they always react.

Question 15

How does the number of valence electrons in beryllium (Be) compare with those of oxygen (O)?

Accepted Answer

Beryllium has fewer valence electrons than oxygen.

Answer

Valence electrons are not present in beryllium or oxygen.

Answer

Beryllium and oxygen have the same number of valence electrons.

Answer

Beryllium has more valence electrons than oxygen.

1st Semester Science Final Review I

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