Chemical/Physical Changes
Breaking a glass is an example of what type of change?
Physical Change
What is the formula for density?
D=M/V
Which subatomic particle has a negative charge?
Electron
What do we call a mixture where everything is able to be physically separated?
Heterogeneous mixture
Is Oxygen an element or a compound?
Element
Burning wood is an example of a?
Chemical Change
What is density?
The amount of mass in a given volume
What subatomic particle has a positive charge?
Proton
What do we call a mixture where the substance appears to be one solid uniform mixture?
Homogeneous mixture
What is a compound?
A chemical bond between two or more elements
Flatting out a piece of steel is an example of what change?
Physical Change
What is the volume of a rectangle that is 2cm x 2 cm x 2cm?
8cm3
Which two subatomic particles make up the nucleus?
Proton and Neutron
Name a physical mean in which you could separate a mixture?
Hands, magnet, sifter, funnel, filter, ...
Is salt, NaCl, an element or a compound?
Compound
What changes in a physical change?
Physical characteristic
What is the density of an object with a mass of 30g and a volume of 5mL?
6 g/mL
If an atoms atomic number is 6, how many protons would that element have?
6
A pile of rocks would be considered which type of mixture?
Heterogeneous mixture
Is neon an element or compound?
Element
What changes in a chemical change?
Chemical makeup
Which of these substances would float to the top?
A. Oil 0.78 g/mL
B. Water 1.0 g/mL
C. Gold 4.5 g/mL
D. Steel 7.8 g/mL
A. Oil 0.78 g/mL
What is the smallest unit of matter that is not divisible by chemical means?
Atom
A glass of tea would be considered which type of mixture?
Homogeneous mixture
How does a compound form?
Through chemical means/reaction.