Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
165 Cards in this Set
- Front
- Back
|
How many electrons does the first shell of an atom hold |
2 |
|
|
what does WHMIS stand for |
Workplace Hazardous Material Information System |
|
|
why can you see your breath when it’s cold. |
Your breath condenses and also crystallizes because as the cold particles which are moving slowly and cold meet the warm air particles you breath, the liquid condenses and becomes a solid. u can see this process |
|
|
How can u identify hydrogen, oxygen and carbon in a flask |
HYDROGEN- makes a squeaky pop noise OXYGEN- reignites a burnt splint CARBON- distinguishes a flame |
|
|
How can u identify hydrogen, oxygen and carbon in a flask |
HYDROGEN- makes a squeaky pop noise OXYGEN- reignites a burnt splint CARBON- distinguishes a flame |
|
|
What is nuclear energy and what r the disadvantages and advantages |
splitting an atom of uranium to produce plutonium and energy. then boiling water to make steam and spinning the turbine or generator. advantage- a little goes a long way disadvantage- radioactive waste and potentially a nuclear meltdown |
|
|
how much nuclear energy is used in ontario |
52% |
|
|
how much nuclear energy is used in ontario |
52% |
|
|
how much fossil fuel energy is used in ontario |
26% |
|
|
how do u measure voltage |
voltmeter |
|
|
opposite charges do what |
attract |
|
|
opposite charges do what |
attract |
|
|
like charges do what |
repel |
|
|
how many electrons does the second shell hold |
eight |
|
|
how many electrons does the second shell hold |
eight |
|
|
what is a lewis diagram |
where u show only the valence shell of an atom |
|
|
mass |
any object gravity pulls down |
|
|
what measures current |
ammeter |
|
|
what is a conductor |
electrons move easily through it |
|
|
does electricity flow in an open circuit |
no/ it does in a CLOSED CIRCUIT |
|
|
what colour is positive |
red |
|
|
what colour is negative |
black |
|
|
charging by induction |
when u ground something (connect it to the ground to make an object neutral by allowing electrons to enter or exit) |
|
|
what is a neutral object |
an object that has the same number of protons and electrons |
|
|
what charge will an object be left with in charging by induction |
OPPOSITE OF WHAT COMES NEAR IT |
|
|
explain lightning |
friction between water and air causes evaporation causing s negative charge to develop at the base of the cloud. the positively charged ground attracts the negative causing lightning and then causing the extra electrons to electrically discharge into the ground. |
|
|
if u discovered a planet full of resources would u keep it to ur country or share with world |
share with world so that the rest of the world wouldn’t have to fight over diminishing resources |
|
|
3 types of matter? |
liquid solid gas |
|
|
mass of a proton vs mass of electron |
protons r 2000x greater than e- |
|
|
mass of a proton vs mass of electron |
protons r 2000x greater than e- |
|
|
the most space taken up in an atom is what? |
empty space |
|
|
what forms majority of the periodic table? |
metals |
|
|
on the periodic table, elements in the same group have the same what |
number of valence electrons |
|
|
on the periodic table, elements in the same group have the same what |
number of valence electrons |
|
|
what is a period on the periodic table |
horizontal row |
|
|
on the periodic table, elements in the same group have the same what |
number of valence electrons |
|
|
what is a period on the periodic table |
horizontal row |
|
|
what’s a row on periodic table |
vertical column |
|
|
on the periodic table, elements in the same group have the same what |
number of valence electrons |
|
|
what is a period on the periodic table |
horizontal row |
|
|
what’s a row on periodic table |
vertical column |
|
|
qualities of non metals |
dull, brittle, poor electricity conductor |
|
|
how does an ion form |
an atom gains or loses electrons |
|
|
on the periodic table, elements in the same group have the same what |
number of valence electrons |
|
|
what is a period on the periodic table |
horizontal row |
|
|
what’s a row on periodic table |
vertical column |
|
|
qualities of non metals |
dull, brittle, poor electricity conductor |
|
|
how does an ion form |
an atom gains or loses electrons |
|
|
what’s an ions charge |
positive bc it has more protons than electrons |
|
|
on the periodic table, elements in the same group have the same what |
number of valence electrons |
|
|
what is a period on the periodic table |
horizontal row |
|
|
what’s a row on periodic table |
vertical column |
|
|
qualities of non metals |
dull, brittle, poor electricity conductor |
|
|
how does an ion form |
an atom gains or loses electrons |
|
|
what’s an ions charge |
positive bc it has more protons than electrons |
|
|
why do atoms gain or lose electrons and make those confuzzling diagrams |
to obtain a complete outer shell |
|
|
on the periodic table, elements in the same group have the same what |
number of valence electrons |
|
|
what is a period on the periodic table |
horizontal row |
|
|
what’s a row on periodic table |
vertical column |
|
|
qualities of non metals |
dull, brittle, poor electricity conductor |
|
|
how does an ion form |
an atom gains or loses electrons |
|
|
what’s an ions charge |
positive bc it has more protons than electrons |
|
|
why do atoms gain or lose electrons and make those confuzzling diagrams |
to obtain a complete outer shell |
|
|
what’s a bohr rutherford diagram |
where u show every electron shell |
|
|
on the periodic table, elements in the same group have the same what |
number of valence electrons |
|
|
what is a period on the periodic table |
horizontal row |
|
|
what’s a row on periodic table |
vertical column |
|
|
qualities of non metals |
dull, brittle, poor electricity conductor |
|
|
how does an ion form |
an atom gains or loses electrons |
|
|
what’s an ions charge |
positive bc it has more protons than electrons |
|
|
why do atoms gain or lose electrons and make those confuzzling diagrams |
to obtain a complete outer shell |
|
|
what’s a bohr rutherford diagram |
where u show every electron shell |
|
|
what’s a lewis diagram |
only shows valence diagrams |
|
|
on the periodic table, elements in the same group have the same what |
number of valence electrons |
|
|
what is a period on the periodic table |
horizontal row |
|
|
what’s a row on periodic table |
vertical column |
|
|
qualities of non metals |
dull, brittle, poor electricity conductor |
|
|
how does an ion form |
an atom gains or loses electrons |
|
|
what’s an ions charge |
positive bc it has more protons than electrons |
|
|
why do atoms gain or lose electrons and make those confuzzling diagrams |
to obtain a complete outer shell |
|
|
what’s a bohr rutherford diagram |
where u show every electron shell |
|
|
what’s a lewis diagram |
only shows valence diagrams |
|
|
how to determine if a substance is a metal |
flame test look for characteristic colours |
|
|
mixture |
made of two or more molecules |
|
|
mixture |
made of two or more molecules |
|
|
molecule |
2 or more atoms chemically bonded together |
|
|
mixture |
made of two or more molecules |
|
|
molecule |
2 or more atoms chemically bonded together |
|
|
element |
composed of any one type of atom |
|
|
mixture |
made of two or more molecules |
|
|
molecule |
2 or more atoms chemically bonded together |
|
|
element |
composed of any one type of atom |
|
|
compound |
two or more different elements |
|
|
mixture |
made of two or more molecules |
|
|
molecule |
2 or more atoms chemically bonded together |
|
|
element |
composed of any one type of atom |
|
|
compound |
two or more different elements |
|
|
physical change |
change in appearance |
|
|
mixture |
made of two or more molecules |
|
|
molecule |
2 or more atoms chemically bonded together |
|
|
element |
composed of any one type of atom |
|
|
compound |
two or more different elements |
|
|
physical change |
change in appearance |
|
|
chemical change |
transforms a substance into anther making new physical and chemical properties |
|
|
mixture |
made of two or more molecules |
|
|
molecule |
2 or more atoms chemically bonded together |
|
|
element |
composed of any one type of atom |
|
|
compound |
two or more different elements |
|
|
physical change |
change in appearance |
|
|
chemical change |
transforms a substance into anther making new physical and chemical properties |
|
|
five signs a chemical reaction occurred |
1. change in colour 2. heat or light is given off 3. not easily reversed 4. bubbles of gas 5. 2 substances mix together to form a solid |
|
|
mixture |
made of two or more molecules |
|
|
molecule |
2 or more atoms chemically bonded together |
|
|
element |
composed of any one type of atom |
|
|
compound |
two or more different elements |
|
|
physical change |
change in appearance |
|
|
chemical change |
transforms a substance into anther making new physical and chemical properties |
|
|
five signs a chemical reaction occurred |
1. change in colour 2. heat or light is given off 3. not easily reversed 4. bubbles of gas 5. 2 substances mix together to form a solid |
|
|
main source of energy for organisms |
radiation from sun |
|
|
mixture |
made of two or more molecules |
|
|
molecule |
2 or more atoms chemically bonded together |
|
|
element |
composed of any one type of atom |
|
|
compound |
two or more different elements |
|
|
physical change |
change in appearance |
|
|
chemical change |
transforms a substance into anther making new physical and chemical properties |
|
|
five signs a chemical reaction occurred |
1. change in colour 2. heat or light is given off 3. not easily reversed 4. bubbles of gas 5. 2 substances mix together to form a solid |
|
|
main source of energy for organisms |
radiation from sun |
|
|
ecological footprint |
how much waste u produce and resources u consume |
|
|
mixture |
made of two or more molecules |
|
|
molecule |
2 or more atoms chemically bonded together |
|
|
element |
composed of any one type of atom |
|
|
compound |
two or more different elements |
|
|
physical change |
change in appearance |
|
|
chemical change |
transforms a substance into anther making new physical and chemical properties |
|
|
five signs a chemical reaction occurred |
1. change in colour 2. heat or light is given off 3. not easily reversed 4. bubbles of gas 5. 2 substances mix together to form a solid |
|
|
main source of energy for organisms |
radiation from sun |
|
|
ecological footprint |
how much waste u produce and resources u consume |
|
|
ion |
a. charged atom |
|
|
mixture |
made of two or more molecules |
|
|
isotope |
more or less protons than neutrons in the atoms nucleus |
|
|
molecule |
2 or more atoms chemically bonded together |
|
|
element |
composed of any one type of atom |
|
|
compound |
two or more different elements |
|
|
physical change |
change in appearance |
|
|
chemical change |
transforms a substance into anther making new physical and chemical properties |
|
|
five signs a chemical reaction occurred |
1. change in colour 2. heat or light is given off 3. not easily reversed 4. bubbles of gas 5. 2 substances mix together to form a solid |
|
|
main source of energy for organisms |
radiation from sun |
|
|
ecological footprint |
how much waste u produce and resources u consume |
|
|
ion |
a. charged atom |
|
|
purpose of flame test |
to observe characteristic colours produced by specific metals |
|
|
purpose of flame test |
to observe characteristic colours produced by specific metals |
|
|
excited state |
electrons jump orbits bc they’re provided energy |
|
|
purpose of flame test |
to observe characteristic colours produced by specific metals |
|
|
excited state |
electrons jump orbits bc they’re provided energy |
|
|
ground state |
electrons fall back to where they’re stable by releasing the energy they absorbed as light |
|
|
purpose of flame test |
to observe characteristic colours produced by specific metals |
|
|
excited state |
electrons jump orbits bc they’re provided energy |
|
|
ground state |
electrons fall back to where they’re stable by releasing the energy they absorbed as light |
|
|
metals |
hard shiny malleable left side |
|
|
purpose of flame test |
to observe characteristic colours produced by specific metals |
|
|
excited state |
electrons jump orbits bc they’re provided energy |
|
|
ground state |
electrons fall back to where they’re stable by releasing the energy they absorbed as light |
|
|
metals |
hard shiny malleable left side |
|
|
non metals |
bad conductors if heat and electricity soft dull brittle gas or liquid right |
|
|
ionic compounds form |
oppositely charged atoms are attracted to each other |
