Elements
What is the name for this element: O
Oxygen
An element is
A. made up of two or more types of atoms
B. Made up of one type of atom
B. Made up of one type of atom
Which number in the chemical equation is the subscript?
NaCl3
3 is the subscript
A chemical change is
A. A change that results in a new substance, is very hard to reverse
B. A change that does not make something new, can be reversed easier
A. A change that results in a new substance, is very hard to reverse
Name a famous scientist
marie curie, albert einstein, jane goodall, alice ball, george washington carver
What represents an element?
A chemical symbol
A compound is
A. Made up of more than one type of atom
B. Made up of one type of atom
A. Made up of more than one type of atom
Which elements in the chemical equation will be multiplied by the subscript?
T(WO)3
W and O will get multiplied by the subscript because they are in the parentheses by the subscript.
A physical change is
A. A change that results in a new substance, is very hard to reverse
B. A change that does not make something new, can be reversed easier
B. A change that does not make something new, can be reversed easier
Name 3 planets
Mercury, venus, earth, mars, jupiter, saturn, uranus, neptune
If a chemical symbol needs 2 letters which letter is uppercase and which letter is lowercase
First letter is upper second letter is lower
Is water aka H2O an element or compound AND why?
Water is a compound because it is made of two different types of atoms
How many Na atoms are present.
Si(ONa2)3
Na= 6
Which is NOT a sign of chemical change
A. Light forms
B. Gas forms
C. A tear
C. A tear is more a sign of a physical change
What are the 3 states of bullying
Solid, liquid, gas
When you put multiple elements together like: OHCl it is called
A. Chemical formula
B. Chemical symbol
A. Chemical formula
A molecule is
A. Made up of multiple atoms BUT they are the same type. Ex. H2
B. Made up of multiple atoms BUT they are all different. Ex. H2O
A. Made up of multiple atoms BUT they are the same type. Ex. H2
How many different elements are in the equation (hint: I only care about letters not numbers)
4Cl2OLi
there are 3 elements
Cl, O, Li
When water goes from a solid to a liquid or liquid to gas it is a
A. chemical change
B. physical change
B. physical change because changes in states of matter are physical changes!!!
What type of scientist studies weather
Meteorologist
You have 60 seconds to use your periodic table to find the names of all the elements in this chemical formula
Formula: TaWFr
Ta:tantalum
W: Tungsten
Fr: Francium
Is O2 a molecule or compound?
A molecule because it is made up of more than one atom BUT they are the same type of atom.
What is the TOTAL atoms in the equation
2Li(NaOH2)2
Li=2
Na=4
O=4
H=8
Total= 18
You have 60 seconds to name 2 chemical changes/signs of chemical change and 2 physical changes
Chemical: burning, precipitates forming, gas forming, light forming, color change, rust, temperature change
Physical: tearing, states of matter changes, color changes that are EXPECTED
What is Ms.Lewis' favorite disney princess
Tiana duh it is my homescreen