Science Test Study

Question 1

Each of these is an example of matter EXCEPT _____.

a cloud
a dust particle

air
a beam of light

Answer 1

A beam of light

Question 2

An atom of the element with atomic number 6 always has _______.

Answer 2

6 protons in its nucleus

Question 3

The atomic number of an element tells the number of ________ in the nucleus of an atom of that element.

Answer 3

protons

Question 4

Isotopes of an element contain different numbers of _______.

Answer 4

neutrons

Question 5

Most elements found on the left side of the periodic table are ______.

Answer 5

metals

Question 6

________ are small particles that make up most types of matter on Earth.

Answer 6

atoms

Question 7

Which of the scientists below introduced the idea that matter is made up of tiny, individual bits called atoms?

Arrhenius
Avogadro
Democritus
Chadwick

Answer 7

Democritus

Question 8

Which of the following scientists envisioned the atom as a ball of positive charge with electrons embedded in it, much like chocolate chips spread through cookie dough?

Crookes
Dalton
Rutherford
Thomson

Answer 8

Thomson

Question 9

Which of the following are found close to the right side of the periodic table?

Answer 9

nonmetals

Question 10

How is matter defined?

Answer 10

anything that has mass and occupies space

Question 11

What does the atom consist of ? (Use picture from number 11-15)

Answer 11

electrons, protons, and neutrons

Question 12

The particle that is labeled #3 on the diagram and has a positive charge in an atom is called ______. (Use picture from number 11-15)

Answer 12

proton

Question 13

What particle is labeled #2 in the diagram? (Use picture from number 11-15)

Answer 13

neutron

Question 14

What particle is labeled #1 in the diagram? (Use picture from number 11-15)

Answer 14

electron

Question 15

In an atom, where is an electron located? (Use picture from number 11-15)

Answer 15

in a cloud-like formation surrounding the nucleus

Question 16

The periodic table block shown above lists properties of the element chlorine. What does the number 35.453 mean? (Use picture from number 16-18)

Answer 16

the average number of neutrons and protons in a chlorine atom

Question 17

According to the periodic table block, how many electrons does an uncharged atom of chlorine have? (Use picture from number 16-18)

Answer 17

17

Question 18

According to the periodic table block, how many neutrons does an uncharged atom of chlorine have? (Use picture from number 16-18)

Answer 18

18

Question 19

Using the figure above, krypton has _______. (Use picture from number 19-21)

an atomic number of 84
an atomic number of 36
an atomic mass of 36
an at

Answer 19

an atomic number of 36

Question 20

From the figure above, the element krypton is _______. (Use picture from number 19-21)

a solid
a liquid
a gas
a mixture

Answer 20

a gas

Question 21

Using the figure above, the atomic mass of krypton is _______. (Use picture from number 19-21)

Answer 21

84

Question 22

In the modern periodic table, elements are arranged by _____.

Answer 22

atomic number

Question 23

The first letter of a chemical symbol is always _____.

Answer 23

a capital letter

Question 24

A metal can be hammered into different shapes because it is _______.

Answer 24

malleable

Question 25

Who created the first periodic table of elements?

Answer 25

Dmitri Mendeleev