Physical and chemical changes
Is burning a piece of paper a physical or chemical change? why?
Chemical change because a new substance is being formed.
Do solids have a definite or indefinite volume?
Definite volume
What is potential energy?
energy stored; energy due to its position
What are the moon phases that cause a spring tide? What are the moon phases that cause a neap tide?
Spring- new moon and a full moon
neap tide- 1st and 3rd quarter moon
What is Luster?
Luster is the ability to reflect light. SHINY
What is a precipitate?
What is the production of a solid
If I am pushing on a box on the right side with 40N And my friend is pushing on The box to the left on the opposite side with a force of 80N what is the total net force?
40N
What is kinetic energy?
Kinetic energy is energy due to its movement
What causes seasons on earth?
Earth's tilt on it axis which causes uneven lighting and heating.
What is a pure Substance?
A pure substance is composed of the same type of atom.
What is a physical change?
a physical change is a when the chemical makeup is not being changed.
Describe the changes of matter/ identify them.
Ice Cube melted then boiled
solid to a liquid and a liquid to a gas
What is the Law of conservation of energy?
Energy cannot be created or destroyed, it can only change form.
The Hemisphere pointed toward the sun is experiencing what season?
Summer
What are the three things that make up the periodic table?
Metals, non metals , and metalloids
Is melting an Ice cube a physical change or a chemical change? why?
Physical change because the chemical makeup is not changing.
What has more kinetic energy, Gas or liquid?
gas has more kinetic energy
What is the amplitude in an energy wave?
Amplitude is the distance between the resting position and its crest
Describe what causes a tide ?
The moons gravitational pull
What is the difference between Malleability and ductility?
Malleability is the ability to be hammered into a thin sheet. Ductility is the ability to be pulled into a wire
Evidence of a chemical change. Name 3
production of gas, Odor, change in temperature, change in color, precipitate was formed
What is newton's 3rd law of motion ?
For every force applied to an object there is a simultaneous force applied that is equal and opposite
What is the difference between a transverse wave and a longitudinal wave?
Transverse wave is perpendicular to the vibrations and a longitudinal wave is parallel to the vibrations (travels in the same direction)
What type of tide has high high tides and low low tides and whyy?
Spring tides because the earth sun and moon are all in a straight line. this means there is a combined gravitational pull with the sun and the moon
what is Malnutrition?
Malnutrition is when there is a lack of access to food containing the nutrients the body needs