Vocabulary #7

Question 0

Nucleus

Answer 0

The center of the atom which contains the protons and neutrons

Question 1

Atom

Answer 1

Basic unit of matter

Question 2

Electrons

Answer 2

Negatively charged partial located outside the atomic nucleus

Question 3

Element

Answer 3

Substance consisting entirely of an atom something that cannot be broken down further

Question 4

Isotope

Answer 4

Atom of an element that has a number of neutrons different from that of other atoms of the same element

Question 5

Compound

Answer 5

Substance formed by the chemical combination of two or more elements in definite proportions

Question 6

Ionic bond

Answer 6

Bond formed when one or more electrons are transferred from atom to another

Question 7

Ion

Answer 7

Atom that has a positive or negative charge

Question 8

Covalent bond

Answer 8

Bond formed by the sharing of electrons between atoms

Question 9

Molecule

Answer 9

Smallest unit of most compounds

Question 10

Acid

Answer 10

Compound that forms hydrogen ions in a solution

Question 11

Base

Answer 11

Compound that produces hydroxide ions in a solution

Question 12

Buffer

Answer 12

Weak acid or base that can react with strong acids or bases to help prevent sharp, sudden changes in pH