Vocab
What is Density?
Mass per unit of volume.
What is plasma?
4th phase of matter that is extremely high energy.
How many L is 140dm3?
140L
Matter is anything that has what?
mass and takes up space.
Boron, 5 electrons.
What is an element?
a pure substance made up of only one kind of atom
What is a mixture?
Something made up of two or more substances not chemically combined.
How many grams is 6.7Kg
6700g
What is pure matter?
Made up of only one type of matter
300 Neutrons
What is a compound?
A pure substance made up of two or more elements chemically combined.
What is a solvent?
Something with ability to dissolve other substances.
How many cm is 350mm?
35cm
What does the mass number tell you?
number of protons plus neutrons.
Pick a member of your team to draw a Bohr model of the atom for Na.
Teacher approval
What is Technology?
The application of science knowledge to solve problems.
What is a solution?
One substance dissolved into another.
How many km is 54 cm?
.00054km
What does the atomic number tell you?
number of protons.
Can two atoms of an element have the same number of protons but different numbers of electrons? Explain
What is an isotope?
An atom of an element with different number of neutrons than expected.
What is the difference between a chemical and physical change?
Chemical: something is made or destroyed.
Physical: something is unchanged chemically.
How many cm tall is a rectangular container if it can hold 100cm3 of water and is 5cm long by 5cm wide?
4cm tall
What are the three subatomic particles and their charges.
Proton = positive
Neutron = neutral
Electron = negative
An atom of an element has 7 protons and a net charge of -3. What element is it and how many electrons does it have?
Nitrogen, 10 electrons.