Chapter 2, The Nature Of Matter

Question 0

substance

Answer 0

is a single kind of matter that is pure, meaning it always has a specific makeup

Question 1

Matter

Answer 1

is anything that has mass and takes up space

Question 2

physical property

Answer 2

a characteristic of a pure substance that can be observed without changing it into another substance.

Question 3

chemical property

Answer 3

a characteristic of a pure substance that describes it’s ability to change into another substance

Question 4

element

Answer 4

is a pure substance that cannot be broken down into any other substances by chemical or physical means

Question 5

atom

Answer 5

the basic particle from which all elements are made

Question 6

chemical bond

Answer 6

holds atoms together, force of attraction between two atoms

Question 7

molecules

Answer 7

atoms combine to form larger particles

Question 8

compound

Answer 8

a pure substance made of two or more elements chemically combined in a set ratio.

Question 9

chemical formula

Answer 9

shows the elements in the compound and the ratio of atoms

Question 10

mixture

Answer 10

is made of two or more substances, elements, compounds, or both, that are together in the same place but not chemically combined. each substance keeps it’s individual properties. parts are not combined in a set ratio.

Question 11

heterogeneous mixture

Answer 11

You can see the different parts

Question 12

homogeneous mixture

Answer 12

substances are so evenly mixed, that you can’t see the different parts

Question 13

solution

Answer 13

type of homogeneous mixture

Question 14

physical change

Answer 14

is any change that alters the form or appearance of matter but does not make any substance in the matter into another substance

Question 15

chemical change

Answer 15

a change in matter that produces one or more new substances

Question 16

law of conservation of matter

Answer 16

the fact that matter is not created or destroyed in any chemical or physical change

Question 17

energy

Answer 17

is the ability to do work or cause change

Question 18

temperature

Answer 18

is a measure of the average energy of random motion of particles of matter

Question 19

thermal energy

Answer 19

is the total energy of all the particles in an object

Question 20

chemical energy

Answer 20

the energy stored in the chemical bonds between atoms

Question 21

electromagnetic energy

Answer 21

a form of energy that travels through space as waves

Question 22

electrical energy

Answer 22

the energy of electrically charged particles moving from one place to another

Question 23

electrodes

Answer 23

a metal strip that conducts electricity

Question 24

endothermic energy

Answer 24

change in which energy is taken in- melting of ice

Question 25

exothermic change

Answer 25

releases energy- combustion