states of matter
How many states of matter are there?
there are 4
what is the atomic radius?
It's the size of the atom
These are the two main types of forces that hold atoms together within molecules and also attract molecules to each other.
Its intramolecular force and intermolecular force
what type of change can alter the appearance of a substance but not its chemical identity?
Its physical change
The PH scale ranges from?
0-14
what are the states of matter?
liquid, gas, solid and plasma
what is a type of alkaline metals?
Lithium (Li), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) and Sodium (Na)
what a Intramolecular force?
Its a strong chemical bond that holds atoms together within a molecule
what is an example of cooking? is it a chemical change or physical change?
Its chemical change
what is the PH of pure water?
PH of 7/ neutral
what are types of plasma?
stars and lighting
what is Ionization energy?
Its the energy required to remove an electron from a neutral atom in its gaseous phase
what type of force can hold molecules together by attractions between molecules.
Its intermolecular force
Melting ice into liquid water what is this type of change
Its physical change
The PH scale measures aqueous solution by ranking them in terms of what?
Acidity
In a solid what does the molecule look like?
they are tightly packed together
What is a metallic character?
Its how readily an atom can lose atom can lose an electron (become a cation)
This bond occurs when atoms share electrons.
Its covalent bond
what is chemical change?
Its when a substances are transformed into entirely new substances with different chemical properties.
when the PH scale has more H3O+ (hydronium) ions is it more acidic or basic
acidic
what is the most abundant form of matter in the universe?
Its plasma
Describe Lanthanides
Its silvery white metal , its also soft and dense, and quickly fades shine when exposed to air
what is the strongest type of intermolecular force, occurring when hydrogen is bonded to highly electronegative atoms like N, O, or F.
Its hydrogen bond
what type of change often involves energy transfer, color change, gas production, or formation of a precipitate?
Its chemical change
litmus paper can help us determine the PH of something so if the litmus paper turns the color red what is the PH?
acidic