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BMAT > Equations > Flashcards

Equations Flashcards

(66 cards)

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1
Q

Group 1 Metal + Water

A

Metal Hydroxide + Hydrogen

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2
Q

Moles

A

Mass / Molar Mass

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3
Q

% Mass of an element in a compound

A

Atomic Mass * Number of Atoms (of element in compound) / Molar Mass (* 100)

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4
Q

% Yield

A

Actual Yield / Theoretical Yield

x 100

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5
Q

% Purity

A

Calculated Mass of Substance / Mass of impure substance

x 100

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6
Q

Acid + Metal

A

Salt + Hydrogen

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7
Q

Acid + Metal Oxide or Metal Hydroxide

A

Salt + Water

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8
Q

Acid + Metal Carbonate

A

Salt + CO2 + H2O

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9
Q

Density

A

Mass/Volume

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10
Q

Wave Speed

A

Frequency (Hz) * Wavelength (m)

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11
Q

1 Hz

A

= XXX

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12
Q

Distance

A

Speed * Time

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13
Q

Frequency

A

1 / Time Period

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14
Q

Average Speed (when acceleration is constant)

A

(U + V) / 2

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15
Q

Acceleration

A

(V - U) / t

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16
Q

Weight (N/kg or m/s/s)

A

Mass * G

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17
Q

Force

A

Mass x Acceleration

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18
Q

Work Done

A

Force * Distance

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19
Q

Power

A

Voltage * Current

AND

Work Done / time

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20
Q

Kinetic Energy

A

1/2 x Mass x Velocity^2

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21
Q

GPE

A

Mass x Gravity x Height

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22
Q

KE Gained =

A

GPE lost

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23
Q

Voltage

A

Current x Resistance

Work Done / Coulomb

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24
Q

Current

A

Coulomb / time

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25
Power Loss
Current^2 x Resistance
26
Alpha Decay
Produces atom with 2 less neutrons and 2 less protons (He) + Gamma rays
27
Beta Decay
Releases an electron and gains a proton
28
Becquerel
1 nucleus decaying / Second
29
Energy
Mass x c^2 | Where c = speed of light (3 x 10^8)
30
1/8
0.125
31
1/9
0.1111111111111
32
% Change
(Change / Original) x 100
33
Compound Interest
Amount after n units of time = Initial Amount x (1 + %change per unit of time / 100)^n units of time
34
Nth Term
dn + (a - d)
35
Surd multiplication
One surd x different surd is like square rooting the product of the two integers
36
Surd division
like square rooting the quotient of the integers
37
Mid point of line
Average of x, Average of y
38
Gradient
(Change in y) / (change in x)
39
Y-stretch
Y = kf(x)
40
Y-shift
Y = f(x) +/- a
41
X-Shift
Y = F(x-a)
42
X-Stretch
Y = f(kx)
43
Reflection on x-axis
Y = -f(x)
44
Reflection on y-axis
Y = f(-x)
45
Exterior Angle of triangle
Sum of opposite interior angles
46
Sum of exterior angles
360^0
47
Sum of Enterior Angles
(n - 2) x 180^o Where n = number of sides
48
Exterior Angle
360^o / number of sides
49
Interior Angle
180 - Exterior Angle
50
Tessellation
360 / Interior Angle
51
How does scale factor affect sides, areas and volumes
Sides are n times bigger Areas are n^2 times bigger Volumes are n^3 times bigger
52
Area of a trapezium
1/2(a + b) x vertical height
53
Area of parallelogram
Base x Vertical Height
54
Area of Triangle
1/2 x base x height
55
Area of Circle
Pi x Radius^2
56
Area of a sector
x/360 x Area of Full Circle
57
Circumference
2 x pi x Radius
58
Length of Arc
X / 360 x Circumference
59
Surface Area of Cylinder
(2 x pi x radius x height) + (2 x pi x radius^2)
60
Surface Area of Hemisphere
2 x pi x radius^2
61
Surface Area of Sphere
4 x pi x radius^2
62
Volume of cuboids
Length x Width x Height
63
Volume of Triangular Prism
Cross Sectional Area x Length
64
Volume of Sphere
(4 x pi x radius^3) / 3
65
Volume of Cylinder
Pi x radius^2 x height
66
Atomic Mass
(X * %) + (Y * %) / 100

BMAT (2 decks)

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