Matter
Matter is anything that has ____ and takes up ____.
mass, space/volume
True or false: A substance's identity must be changed in order to observe a physical property.
False
Particles move (faster/slower) when you add energy.
Faster
What is the equation for charge using number of protons and electrons?
Charge = number of protons - number of electrons
Which side of the arrow are reactants? Which side of the arrow are products?
Left side = reactants
Right side = products
Solid (does/does not) have a fixed shape and volume.
does
True or false: an apple going bad is an example of a chemical change.
True
What is the opposite of melting?
Freezing
How many protons does helium have? How many electrons does a neutral atom of helium have? What is its atomic weight?
2, 2, 4.003
What is the chemical formula for water?
H2O
Rank the three states of matter from least movement in molecules to most movement in molecules.
Solid < Liquid < Gas
What type of change is cooking an egg?
Chemical Change
When energy is added, particles move (closer/spread out)
spread out
What are the three parts of an atom? (hint: they are positively charged, negatively charged, neutral)
Proton, electron, neutron
What are some hints that show that a chemical change has occurred?
Change of smell, change of color, new substance
See image.
Element
Physical change
What is the opposite of condensation?
Evaporation
What is the horizontal row of the periodic table called?
Period
What does the 2 in 3H2 mean? What about the 3?
There are 2 hydrogen atoms bonded to each other to form an element. There are 3 of these hydrogen elements involved in the reaction.
See image.
Mixture of elements and compounds.
What type of change is a metal (from a car) rusting?
Chemical change
What is dry ice formation called?
Sublimation
What is the vertical column of the periodic table called?
Family/Group
How many atoms of each element are involved in 5CO2?
5 carbons, 10 oxygens