The structure of an atom🌷

Question 1

What is the smallest unit of matter?

Answer 1

An atom

Question 2

True or False: Atoms can be seen with the naked eye.

Answer 2

False

Question 3

What are the three main subatomic particles?

Answer 3

Protons, neutrons, and electrons

Question 4

Fill in the blank: Protons have a _____ charge.

Answer 4

positive

Question 5

What is the charge of a neutron?

Answer 5

Neutral (no charge)

Question 6

Where are electrons located in an atom?

Answer 6

In the electron cloud surrounding the nucleus

Question 7

What is the nucleus of an atom made of?

Answer 7

Protons and neutrons

Question 8

True or False: Electrons have a much greater mass than protons.

Answer 8

False

Question 9

What determines the atomic number of an element?

Answer 9

The number of protons in the nucleus

Question 10

Fill in the blank: The mass of an electron is _____ compared to a proton.

Answer 10

negligible

Question 11

What is an ion?

Answer 11

An atom that has gained or lost electrons, resulting in a charge

Question 12

How do you calculate the number of neutrons in an atom?

Answer 12

Subtract the atomic number from the atomic mass

Question 13

What is the role of electrons in chemical bonding?

Answer 13

They participate in the formation of bonds between atoms.

Question 14

True or False: All atoms of the same element have the same number of protons.

Answer 14

True

Question 15

What is the term for atoms of the same element with different numbers of neutrons?

Answer 15

Isotopes

Question 16

What is the maximum number of electrons that can occupy the first energy level?

Answer 16

2 electrons

Question 17

What does the periodic table organize?

Answer 17

Elements based on their atomic number and properties

Question 18

Fill in the blank: An atom’s stability is influenced by the number of _____ it has.

Answer 18

electrons

Question 19

What is the charge of an electron?

Answer 19

Negative

Question 20

True or False: A neutral atom has equal numbers of protons and electrons.

Answer 20

True

Question 21

What is the outermost shell of an atom called?

Answer 21

Valence shell

Question 22

What is the significance of valence electrons?

Answer 22

They determine how an atom will bond with other atoms.

Question 23

What is a molecule?

Answer 23

A group of two or more atoms bonded together.

Question 24

Fill in the blank: The atomic mass unit (amu) is used to express the mass of _____ and _____ in an atom.

Answer 24

protons and neutrons

Question 25

What is the symbol for the element carbon?

Answer 25

C

Question 26

How many protons are in a carbon atom?

Answer 26

6 protons