SCIENCE ATOMS

Question 1

What is the positively charged
particle found in the nucleus
called?

Answer 1

Proton

Question 2

What is the nuclear particle that
has no electrical charge called?

Answer 2

Neutron

Question 3

What is the number of protons in the nucleus of an element is called?

Answer 3

Atomic Number

Question 4

What is the total number of
protons and neutrons in the nucleus of a single atom called?

Answer 4

Atomic Mass/Mass Number

Question 5

What do you call the atoms that
have the same number of protons but different numbers of neutrons?

Answer 5

Isotopes

Question 6

What is the center of the atom
called?

Answer 6

Nucleus

Question 7

With the given 13 protons and 13 electrons, how many protons and electrons are there in a 27Al13 atom?

Answer 7

13 Protons, 13 Electrons

Question 8

What is the chemical symbol of
potassium?

Answer 8

K

Question 9

What are the 3 subatomic parts of the atom?

Answer 9

Protons, Electrons, and Neutrons

Question 10

Who and when were the electrons discovered?

Answer 10

Joseph John Thomson in 1897.

Question 10

This part of an atom consists of protons and neutrons.

Answer 10

Nucleus

Question 11

Who and when were the protons discovered?

Answer 11

Ernest Rutherford in 1917.

Question 12

Who and when were the nucleus discovered?

Answer 12

Ernest Rutherford in 1911.

Question 13

Who and when were the neutrons discovered?

Answer 13

James Chadwick in 1932.

Question 14

Atomic number equals the number of _______ or _______

Answer 14

protons or electrons

Question 15

Atomic mass equals the number of _______ + ________

Answer 15

protons + neutrons

Question 16

It is an atom or molecule that
has a POSITIVE or NEGATIVE charge.

Answer 16

Ion

Question 17

NEGATIVELY charged atoms
have fewer protons, more
electrons.

Answer 17

Anions

Question 18

POSITIVELY charged atoms
have fewer electrons, more
protons.

Answer 18

Cations

Question 19

These are atoms that have the
same number of protons, but
different numbers of neutrons.

Answer 19

Isotopes

Question 20

The proton has a larger mass than electron. TRUE OR FALSE

Answer 20

TRUE

Question 21

The electrons are located inside the nucleus of an atom. TRUE OR FALSE

Answer 21

FALSE

Question 22

Among the three subatomic particles, electrons were the first one discovered. TRUE OR FALSE

Answer 22

TRUE

Question 23

The neutron has no charge and no mass. TRUE OR FALSE

Answer 23

FALSE

Question 24

Isotopes have the same number of _____ and different number of neutrons and _____.

Answer 24

Isotopes have the same number of Protons and different number of neutrons and Atomic Mass/Mass Number.