Atoms
What subatomic particle has a positive charge?
Proton
What is an element?
A pure substance made of only one type of atom.
How many oxygen atoms are in H₂SO₄?
4
Can the substances in a mixture be separated physically?
Yes
What is the electron configurations of calcium?
2,8,8,2
How many protons does lithium have?
3
What is the chemical symbol for oxygen?
O
Is H₂O an element or compound?
Compound
Is salt water a mixture or compound?
Mixture
What is the formula of mass number
Proton Number + Number of Neutrons
What subatomic particle has a negative charge?
Electron
What element has the symbol Na?
Sodium
What elements make up CO₂?
Carbon and Oxygen
What is a mixture?
Two or more substances physically combined.
What is Sodium Hydroxide made of?
NaHO
Where are protons and neutrons found?
In the nucleus
What element has 6 protons?
Carbon
What is a Compound
A substance made when two or more different elements chemically bond.
What is the difference between a mixture and a compound?
A mixture is physically combined and can usually be separated physically; a compound is chemically bonded.
An atom has 8 protons and 8 electrons. What is its charge?
0 (neutral)
An atom has 11 protons and 10 electrons. What is its charge?
+1
An element has atomic number 17. What element is it?
Chlorine
What is the difference between an element and a compound?
An element contains one type of atom, while a compound contains two or more different elements chemically bonded.
What method could separate sand from water?
Filtration
A substance contains sodium and chlorine chemically bonded together. What is it?
Sodium chloride (NaCl), a compound