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Atoms
Measuring
Periodic Table
Bonding
Acids and Bases
100
What is the center of the atom?
The Nucleus
100
What is mass?
amount of matter
100
Is density a chemical or physical property?
physical
100
what are the two types of bonding between atoms?
ionic and covalent
100
what are some properties of acids?
pH less than 6, tastes sour, drinks
200
What is the nucleus made of?
Protons and Neutrons
200
What is volume
amount of space an object takes up
200
Name 2 chemical properties
flammability, rust, gas production
200
which type of bonding requires transfer of electrons
ionic
200
what are some properties of bases
pH greater than 8, bitter, used for cleaning
300
What type of charge do protons, neutrons, and electrons each have?
positive, neutral, negative
300
What do we use to measure mass?
triple beam balance
300
What is a physical change?
change that can be undone
300
which type of bonding creates a charge?
ionic
300
what is the scale used to measure acidity
pH
400
An atomic number tells us how many _______ an atom has.
protons/electrons
400
What is density and its equation?
an intensive property that is the ratio of an objects mass to its volume; mass/volume
400
Give an example of a chemical change
burning wood...
400
name some examples of covalently bonded compounds.
water
400
mouthwash: acid, base, or neutral?
base
500
Which element has 17 protons?
Chlorine
500
What are the ways to calculate volume?
measuring LWH, displacement, graduated cylinder
500
Which family only exists in gas form?
noble gases
500
an atom starts with 5 outer electrons and gains 3. what is the charge?
negative 3
500
what is the expected pH of lemon juice
around 2