Chemistry
The same number BEHIND the element symbol represents the..?
Subscript
Formula for force
F=M*A
Identify the 4 main groups of stars that are on the HR Diagram
White Dwarf
Main Sequence
Red Giant
Super Giant
Divergent plate boundaries create
mid ocean ridges
What is considered acidic on the PH scale?
0-6
Ms. Jordan completed a science experiment with a group of 8th graders. During the experiment, she noticed bubbles forming. Explain the type of reaction that occured.
Chemical Reaction
A sledgehammer has a mass of 3.5 kilograms. What net force, to the nearest whole newton, will a person need to apply to accelerate the sledgehammer at a rate of 4.0 m/s2 ?
14 N
True or False? The x-axis on the HR Diagram includes the brightness and it increases from right to left. Explain
False
Please explain convergent collison.
Answer should include....Plates collide and form mountains.
What function do both cell membranes and cell walls perform?
F Producing energy for cellular processes
G Allowing water to move into and out of cells
H Synthesizing genetic material
J Directing the reproduction of the cell
G. Allowing water to move into and out of cells
Which of these observations is an indication that a chemical reaction has occurred?
A Steam forms above boiling water.
B A solid forms when a clear solution is frozen.
C A solid forms when two clear solutions are mixed.
D Sugar crystals form on the sides of a boiling pot of sugar water
C A solid forms when two clear solutions are mixed.
42 The chart shows properties of four elements. Element Properties Element
Luster, Conducts Electricity, Conducts Heat, Melting Point
1 Shiny, Yes Yes Low
2 Dull No No Low
3 Shiny Yes Yes High
4 Dull Yes Yes High
Based on these properties, which element is most likely a nonmetal?
2
Neap Tides occur twice a month when the sun, moon and Earth at a......
Right Angle
Ms. McClain told her students that plates that submerge underneath one another cause volcanoes to form. What type of plate boundary is being explained?
What is the function of the integumentary system
4AgNO3
Identify the elements and the total amount of atoms
Silver
Nitrogen
Oxygen
Total=20
Describe the properties of a metal
Malleable
Lustrous
Good Conductors of Electricity and Heat
Spring tides occur when?
The Moon, Sun and Earth are in a straight line.
Earthquakes form from
Transform plate boundaries
These are changes of ?
Size, shape or state of matter
Physical Change
What is the Law of Conservation of Mass
Matter can neither be created or destroyed
Photosynthesis is?
producers make their own food using sunlight
Flow of energy in a food web
Producers
Primary Consumers
Secondary Consumers
Tertiary Consumers
What is an atomic number
number of protons in an atom of the element
Solid forming in a liquid