Atoms, Periodic Table & Chemical Reactions

Question 1

A chemical equation that shows the same number of each kind of atom on both sides is said to be

Accepted Answer

balanced

Question 2

What name is given to the elements in Groups 3-12 of the periodic table

Accepted Answer

Transition Metals

Question 3

In a chemcial equation, the substances written on the right side of the arrow are called

Accepted Answer

products

Question 4

The elements that do not ordinarily form compounds are

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noble gases

Question 5

In the periodic table, the most reactive metals are found

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in Group 1, the first column on the left

Question 6

Most metals are in the __________ state at room temperature

Accepted Answer

solid

Question 7

In a chemical equation, numbers appear in front of a chemical formula.This # tells you the

Accepted Answer

number of molecules or atoms of each substance in reaction

Question 8

Flourine, chlorine, bromine, and iodine are all part of a family called

Accepted Answer

halogens

Question 9

The number placed below an element's symbol in a chemical formula is called a

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subscript

Question 10

Which of these statements about a column of the periodic table is true?

Accepted Answer

The elements have similar properties

Question 11

An element's _____ is predicted from it location in the periodic table.

Accepted Answer

properties

Question 12

In an atom, the number of protons equals the number of

Accepted Answer

electrons

Question 13

What happens when chemical bonds break and new bonds form?

Accepted Answer

a chemical reaction

Question 14

What information in the periodic table indicates the number of protons in an atom?

Accepted Answer

the element's atomic number

Question 15

Because atoms are so small

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scientists can only create models to describe them

Question 16

At room temperature, more than half of the nonmetal elements are

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gases

Question 17

A shorter, easier way to show chemical reactions, using symbols instead of words, is called a

Accepted Answer

chemical equation

Question 18

Most of the elements that touch the zigzag line belong to one major group?

Accepted Answer

metalloids

Question 19

A material is said to be ductile if it

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can be pulled out, or drawn into a long wire

Question 20

From an element's location in the periodic table, you can predict

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its properties

Question 21

Which of these statements about a column of the periodic table is true?

Accepted Answer

The elements have similar properties

Question 22

What element is located in the first row of Group 1 on the Periodic Table?

Accepted Answer

Hydrogen

Question 23

If a metal reacts violently with water, in which group is it likely to be found?

Accepted Answer

Group 1

Question 24

The elements in a column of the periodic table

Accepted Answer

have similar properties

Question 25

CaCo3 represents a chemical

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formula

Question 26

Which parts of the atom move around the nucleus?

Accepted Answer

electrons

Question 27

The property of an element that indicates the number of protons in its atoms it the

Accepted Answer

Atomic number

Question 28

The chemical reactivity of metals tends to _______ from left to right across the periodic table

Accepted Answer

decrease

Question 29

A column of elements in the periodic table is called a group, or

Accepted Answer

family

Question 30

Which group of elements shares characteristics with both metals and nonmetals?

Accepted Answer

metalloids

Question 31

Which group contains the most elements?

Accepted Answer

metals

Question 32

Which of the following statements about transition metals is true?

Accepted Answer

include familiar metals such as gold, silver,copper & nickel

Question 33

Which particles in atoms have a negative electric charge?

Accepted Answer

electrons

Question 34

The substance listed on the left side of a chemical equation are the

Accepted Answer

reactants

Question 35

Which of the following is a balanced chemical equation?

Accepted Answer

2 Fe2O3 + 3C -> 4 Fe + 3 CO2

Atoms, Periodic Table & Chemical Reactions

Questions 35

Atoms, Periodic Table & Chemical Reactions

Questions 35