Chemistry

Question 1

What is the basic unit of all living organisms?

Answer 1

The cell

Question 2

What is the smallest unit of a cell?

Answer 2

The atom

Question 3

True or False: Atoms are made up of protons, neutrons, and electrons.

Answer 3

True

Question 4

What is the charge of a proton?

Answer 4

Positive

Question 5

What is the charge of an electron?

Answer 5

Negative

Question 6

What is the charge of a neutron?

Answer 6

Neutral

Question 7

Fill in the blank: The nucleus of an atom contains ______ and neutrons.

Answer 7

Protons

Question 8

What is the atomic number of an element?

Answer 8

The number of protons in the nucleus

Question 9

What is the atomic mass of an element?

Answer 9

The sum of protons and neutrons in the nucleus

Question 10

What is the charge of an atom if it gains an electron?

Answer 10

Negative

Question 11

What is the charge of an atom if it loses an electron?

Answer 11

Positive

Question 12

What is the outermost part of an atom called?

Answer 12

Electron shell

Question 13

True or False: Electrons closest to the nucleus have higher energy levels.

Answer 13

False

Question 14

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

Answer 14

Isotopes

Question 15

What type of bond involves the sharing of electrons between atoms?

Answer 15

Covalent bond

Question 16

What type of bond involves the transfer of electrons from one atom to another?

Answer 16

Ionic bond

Question 17

What is the term for a charged atom?

Answer 17

Ion

Question 18

Fill in the blank: The atomic number is equal to the number of ______ in an atom.

Answer 18

Protons

Question 19

What is the term for an atom that has gained or lost electrons?

Answer 19

Ion

Question 20

What is the term for the outermost electron shell of an atom?

Answer 20

Valence shell

Question 21

What is the term for the attraction between oppositely charged ions?

Answer 21

Ionic bond

Question 22

What is the term for a molecule with an unequal distribution of charges?

Answer 22

Polar molecule

Question 23

What is the term for a molecule with an even distribution of charges?

Answer 23

Nonpolar molecule

Question 24

What is the term for a weak attraction between slightly positive and slightly negative regions of molecules?

Answer 24

Hydrogen bond

Question 25

What are elements?

Answer 25

An element is a fundamental item that can't be easily broken into smaller pieces

Question 26

What is a compound?

Answer 26

A pure substance made from more than one type of element chemically bonded together

Question 27

What is the periodic table?

Answer 27

a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.

Question 28

What are electrons?

Answer 28

An electron is a negatively charged subatomic particle that can be either bound to an atom or free

Question 29

What are electrons?

Answer 29

An electron is a negatively charged subatomic particle that can be either bound to an atom or free

Question 30

What are protons?

Answer 30

The proton is a subatomic particle with a positive electrical charge

Question 31

What are neutrons

Answer 31

The neutron is one of the three subatomic particles that make up an atom. The neutron however does not have a charge.