Chemistry

Front 1

Hypothesis?

Back 1

a tentative explanation for what has been observed

Front 2

Independent variable?

Back 2

the variable that you plan to change

Front 3

Dependent Variable?

Back 3

the variable whose value depends on the independent variable

Front 4

Control in a experiment the standard used variable for comparison

In an experiment how many variables can be changed at a time?

Back 4

one

Front 5

What is the difference between Theory and scientific law?

Back 5

■A theory is an explanation of a natural Phenomenon based on many observations and investigations over time Scientific aw is a relationship in nature that is supported by many experiments.

Front 6

The systematic approach used in scientific studies is called the?

Back 6

Scientific Method

Front 7

Evolution is an example of a?

Back 7

Theory

Front 8

Si unit of mass is the?

Back 8

kilogram

Front 9

Si unit of time is?

Back 9

Second

Front 10

Si unit of length is?

Back 10

meter

Front 11

Si unit of volume?

Back 11

Cubic meter

Front 12

Formula of mass?

Back 12

Volume x Density

Front 13

Temperature?

Back 13

Celsius and Fahrenheit

Front 14

Formula for density?

Back 14

density= mass/ volume

Front 15

Accuracy?

Back 15

Refers to how close a measured value is to an accepted value

Front 16

Precision?

Back 16

Refers to hoe close a series of measurements are to one another precise measurements show little variation over a series of trials but might not be accurate

Front 17

Density?

Back 17

The amount of mass per unit volume a physical property

Front 18

Scientific notation?

Back 18

can be used to express any number as a number between 1- 10 (coefficient) multiplied by 10 raised to a power (exponent) When the exponent is negative it is a small number and when it is positive it is a big number

Front 19

Significant figures?

Back 19

all known digits plus one estimated digit.

Front 20

If all of your darts hit the bulls eye you have been?

Back 20

Both accurate and Precise

Front 21

If all your darts hit the wall near each other away from the bulls eye you have been?

Back 21

precise

Front 22

Chemistry is the study of?

Back 22

matter and its changes

Front 23

Matter is divided into two categories ?

Back 23

Mixtures and pure Substances

Front 24

Mixtures can be?

Back 24

homogeneous or heterogeneous

Front 25

Pure substances are either ?

Back 25

elements or compounds

Front 26

Heterogeneous mixture?

Back 26

is a mixture that does not bend smoothly throughout and which the individual substances remain distinct.

Front 27

Homogeneous mixture?

Back 27

is a mixture that has constant composition throughout it always has a single phase

Front 28

Physical change?

Back 28

alters a substance without changing composition

Front 29

Chemical Change?

Back 29

involves one or more substances changing into a new substance.

Front 30

Mixture?

Back 30

is a combination of two or more pure substances retains its individual chemical property

Front 31

What is a physical property?

Back 31

is a characteristic that can be observed or measured without changing the samples compositions.

Front 32

What is a chemical property?

Back 32

is the ability of a substance to combine with or change into one or more other substances

Front 33

Physical changes?

Back 33

are changes that do not create a new substance (state changes

Front 34

Compound?

Back 34

- is made of two or more different elements combined chemically

Front 35

______are elements on the left side of the periodic table that are often shiny solids that conduct electricy

Back 35

Metals

Front 36

Element?

Back 36

a pure substance that cannot be separated into a simper form

Front 37

Chemical Properties can be determined by ?

Back 37

changing the substance most commonly chemical properties include the REACTIVITY of a substance

Front 38

Physical properties can be determined ?

Back 38

without changing a substance ex color density and solubility

Front 39

Chemical Properties can be determined by ?

Back 39

changing the substance most commonly chemical properties include the REACTIVITY of a substance

Front 40

Chemical changes?

Back 40

are changes that create a new substance

Front 41

Physical properties can be determined ?

Back 41

without changing a substance ex color density and solubility

Front 42

What is a physical property?

Back 42

is a characteristic that can be observed or measured without changing the samples compositions.

Front 43

What is a physical property?

Back 43

is a characteristic that can be observed or measured without changing the samples compositions.

Front 44

Physical changes?

Back 44

are changes that do not create a new substance (state changes

Front 45

Solution is?

Back 45

homogeneous

Front 46

Solution is?

Back 46

homogeneous

Front 47

What is a chemical property?

Back 47

is the ability of a substance to combine with or change into one or more other substances

Front 48

______are elements on the left side of the periodic table that are often shiny solids that conduct electricy

Back 48

Metals

Front 49

Chemical changes?

Back 49

are changes that create a new substance

Front 50

Compound?

Back 50

- is made of two or more different elements combined chemically

Front 51

What is a chemical property?

Back 51

is the ability of a substance to combine with or change into one or more other substances

Front 52

Compound?

Back 52

- is made of two or more different elements combined chemically

Front 53

______are elements on the left side of the periodic table that are often shiny solids that conduct electricy

Back 53

Metals

Front 54

Element?

Back 54

a pure substance that cannot be separated into a simper form

Front 55

What is a physical property?

Back 55

is a characteristic that can be observed or measured without changing the samples compositions.

Front 56

Physical properties can be determined ?

Back 56

without changing a substance ex color density and solubility

Front 57

What is a chemical property?

Back 57

is the ability of a substance to combine with or change into one or more other substances

Front 58

Element?

Back 58

a pure substance that cannot be separated into a simper form

Front 59

Physical changes?

Back 59

are changes that do not create a new substance (state changes

Front 60

Compound?

Back 60

- is made of two or more different elements combined chemically

Front 61

Chemical Properties can be determined by ?

Back 61

changing the substance most commonly chemical properties include the REACTIVITY of a substance

Front 62

______are elements on the left side of the periodic table that are often shiny solids that conduct electricy

Back 62

Metals

Front 63

Chemical changes?

Back 63

are changes that create a new substance

Front 64

Physical changes?

Back 64

are changes that do not create a new substance (state changes

Front 65

______are elements on the left side of the periodic table that are often shiny solids that conduct electricy

Back 65

Metals

Front 66

Chemical Properties can be determined by ?

Back 66

changing the substance most commonly chemical properties include the REACTIVITY of a substance

Front 67

Element?

Back 67

a pure substance that cannot be separated into a simper form

Front 68

What is a chemical property?

Back 68

is the ability of a substance to combine with or change into one or more other substances

Front 69

Compound?

Back 69

- is made of two or more different elements combined chemically