Question | Answer |
Triple Beam Balance | used to meansure mass in grams |
Neutron | the part of an atom with no charge |
Proton | the part of an atom with a positive charge |
Electron | the part of an atom with a negative charge |
Chemical Change | a change that cannot be undone. ex: paper burning |
Physical Change | a change that can be reversed; a change ion the state of matter. ex: ice cubes melting |
Newton's First Law | an object at rest/motion will stay in rest/motion until an unbalanced force acts upon it |
what should you do with dirty beakers after a lab? | clean them |
how is the periodic table organized? | in periods, groups, and by increasing atomic number |
is 2HeC + H -> 2HeCH a molecule, equation, or element? | equation |
if the net force on an object is 7N, are the forces balanced or unbalanced? | unbalanced |
If Sally drives 10 miles in 20 minutes, how fast was she driving? | 0.5 mi/min |
What kind of graph has distance and time on the x and y axises? | speed graph |
What kind of graph has velocity and time on the x and y axises? | acceleration graph |
What are the 3 types of galaxies? | spiral, elliptical, and irregular |
What is a comet? | made of rock, ice, and cosmic dust loosely packed together; orbits the sun in an elliptical pathway |
light year | the distance light travels in one Earth year |
electromagnetic spectrum | spectrum that shows all possible frequencies of electromagnetic radiation |
Newton's 3rd Law | for every action, there is an equal and opposite reaction |
In the equation 3HeC + 4KH -> 7HeCKH, how many atoms of He are there on the product side? | 7 atoms of He |
Is HeKCl an element, molecule, or equation? | molecule |
When an atom loses a proton, what does it become? | a new element |
When an atom loses a electron, what does it become? | it becomes an ion |
When an atom loses a neutron, what does it become? | it becomes an isotope |
If the net force on an object is zero newtons, are the forces acting upon the obkect balanced or unbalanced? | balanced |