Foundations of Chemistry

Question 1

An element consists of just one type of

Answer 1

atom

Question 2

Each type of atom contains a different number of protons in its

Answer 2

nucleus

Question 3

The number of protons in an atom determines an elements

Answer 3

atomic number

Question 4

what is a substance?

Answer 4

A matter with a composition that is always the same

Question 5

What is a mixture

Answer 5

matter that can vary in composition

Question 6

has mass and takes up space

Answer 6

matter

Question 7

unlike anything else

Answer 7

unique

Question 8

composition is always the same

Answer 8

substance

Question 9

evenly mixed

Answer 9

homogeneous mixture

Question 10

building block of matter

Answer 10

atom

Question 11

unevenly mixed

Answer 11

heterogeneous mixture

Question 12

form a solution by evenly mixing

Answer 12

dissolve

Question 13

what is at the center of am atom

Answer 13

nucleus

Question 14

protons have a (+ or -) charge

Answer 14

+

Question 15

neutrons have (- or 0) charge

Answer 15

0

Question 16

electrons have (0 or -) charge

Answer 16

-

Question 17

The number of protons in an atom is called

Answer 17

atomic number

Question 18

A ________ is a type of substance containing atoms of two or more elements

Answer 18

compound

Question 19

a ______ _______ is the combination of symbols nd numbers that represents a compound

Answer 19

chemical formula

Question 20

The symbols in a chemical formula show the different ________ in the compound

Answer 20

elements

Question 21

The number of each type of atom is in a chemical formula given by a ______

Answer 21

subscript

Question 22

how are the components in a compound mixed

Answer 22

physically blended

Question 23

another name for a even mixture is a

Answer 23

solution

Question 24

Chemical formulas can be used to describe

Answer 24

compounds

Question 25

The components of a compound are ______ mixed

Answer 25

chemically