Elements, Compounds and Mixtures
A substance with only one kind of atom is called?
What is an element.
Name the 3 subatomic particles found in an atom
What is proton, neutron and electron.
If an element's atomic number is 8, what element is to the left of this? (what comes before it on the periodic table?)
What is element with atomic number 7
What type of element is the periodic table mostly made of?
What is metals
What are the 3 states of matter?
What is solid, liquid and gas.
A combination of different substances that are NOT chemically combined is?
What is a mixture.
Which subatomic particles are found in the nucleus?
What are protons and neutrons.
What does the atomic number tell us?
What is the number of protons in each atom of that element. OR
The element's position on the periodic table
What are the three types of elements on the periodic table?
What is metals, metalloids and nonmetals.
A rotting pumpkin is going through a physical OR chemical change?
What is chemical change.
Which can be separated easily by physical means?
Mixtures
Which subatomic particles make up the atom's mass?
What are protons and neutrons.
What does the atomic mass number tell us?
What is the total number of protons AND neutrons in the nucleus of that elements' atom
What is a row on the periodic table called?
A period
In which state of matter are the particles constantly moving?
What is ALL 3! Solids, liquids and gases
2 or more elements that are chemically combined are called?
What is a compound.
What charge does an electron have?
What is negative charge.
How are elements arranged on the periodic table?
they are arranged by atomic number
What do elements in a group have in common?
Same number of valence electrons
Oxidation (rust) is which type of change - physical or chemical?
What is chemical.
What is water - an element? a compound? a mixture?
What is a compound.
Why have our ideas about what an atom looks like changed over time?
Ideas have changed because we have collected new evidence with new technology.
What 4 things are listed on each element's square?
What is Atomic number, Element name, Chemical symbol, Atomic mass
Elements in which of the following react similarly:
A period or a group?
Group
What is the smallest particle of substance that still behaves like the substance?
What is an atom.