Chemistry-Chemical Reactions Vocab

Question 1

compound

Answer 1

substance made of two or more atoms of different elements chemically combined

Question 2

molecule

Answer 2

two or more atoms

Question 3

mixture

Answer 3

a substance consisting of two or more substances mixed together but not chemically bonded. (like trail mix)

Question 4

chemical formula

Answer 4

way of expressing the numbers and types of atoms in a compound

Question 5

chemical symbol

Answer 5

represents the element with capital letter, or captial letter and lower case letter

Question 6

subscript

Answer 6

small number to right of the chemical symbol to indicate how many atoms of an element

Question 7

coefficent

Answer 7

number placed in front of the chemical symbol

Question 8

pure substance

Answer 8

a substance made of only one kind of matter and having definite properties

Question 9

chemical reaction

Answer 9

takes place when two or more substances interact to form different substances with different properites

Question 10

chemical equation

Answer 10

description of chemical reaction using chemical formulas

Question 11

product

Answer 11

substance is formed as a result of a reaction

Question 12

reactant

Answer 12

substance that undergoes change in a chemical reaction using chemical formulas

Question 13

balanced equation

Answer 13

chemical equation with the same number of atoms of each element on both sides of the equation

Question 14

precipitate

Answer 14

solid is formed in product of chemical reaction

Question 15

law of conservation of matter

Answer 15

matter can be neither created nor destroyed