exam 1 Flashcards
An object with potential energy is?
At rest
The ability to do work is?
Energy
What kinda energy do fuels contain?
Potential
Are fuels, wind and moving water directly or partially dependent on solar energy?
Partially
What method does heat energy travel by, from molecule to molecule?
Conduction
Is wood a good conductor or insulator?
Insulator
When a gas or liquid is heated, in which way does it’s me clued movie?
Away from each other
When heat energy is transferred from the circulation of the heated materials it is called?
Convection
Liquid & gasses transfer heat by what method?
Convection
Radiant energy produces what kinda energy when it strikes matter?
Heat
Light rays are a form of what kinda energy?
Radiant
During photosynthesis, what kinda energy do plants use?
Radiant
Photosynthesis results in the production of?
Oxygen
Food and fuels are both forms of what kinda energy?
Chemical
What is the longest wavelength of light visible to the human eye.
Red
Can sounds energy pass through an empty space?
No
Sounds with a high pitch are vibrating at what kinda frequency
High
Is a pushing m against a rock but not moving it work?
No
Name to measurements of work?
Power x time & force X distance
What unit measures heat energy?
Calorie
What unit measures force?
Foot- pound
What is important when measuring power?
Time
Name two materials which absorb radiant energy well?
Dark colors, soils and rocks:’
Name materials that refract radiant energy well?
Light colord materials and large body’s of water
Does matter have volume?
True
Is the density of a of pound if Cotten and a pound of leaf the same?
Different
carbon dioxide, water & glucose are all made of two or more elements?
Comepounds
The smallest into of an element which contains the charistic of that element
Martins of different the. Irons of ton
Matter witch a definite volume but without a definite shape is a?
Gas
How do the number if protons and electrons relate in an atom?
They age equal
What subatomic particles is farthest from nucleus of the atom, and is in the highest energy?
Electron
Most of an atoms mass is in its?
Nucleus
The chemical symbol for sodium is?
Na
The most number of atoms represent by the formula is 2 CO2 is?
6?
When two atoms join by sharing electrons, the bind I called?
Covalent
An element that is found in all acid is?
Morhon
An element that is found in all organic molecules is?
Carbon
A substance has more hydroxyl ions (OH-) then hydrogen uibs (H+) it is,
A base
A substance which helps make a chemical change happen, but is not changed its self in the process is called a?
Catalyst
Rushing urn is an example of what kinda change?
A chemical phase?
The process of changing from a gas to a liquid is called?
Condensation.
A moisture in which the smallest particles if tie it more substances are evenly distributed is known as I ?
Solution
The Celsius tempotureo at which water becomes a solid is?m
Melting point
The temperature I. Which substance freezes is also it’s?
0o
What’s the air pressure is low, the freezing point of water?
Decreases
Negatively charged in its particles, 200 are needed to equal mass of apoton located out side nuclious?
Election
Proton had a posture charge, has the same number of elections in an atom located with the neutrons in the nucleus.
Proton
Neutrons have neutral charge have almost the San mass as protons with protons. The make one I I am atomv
The neutron
