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- Multiple ChoicePlease save your changes before editing any questions.
Based on the number of protons, what atom is this a picture of ?
Boron
Lithium
Carbon
Neon
- Multiple ChoicePlease save your changes before editing any questions.
The picture illustrates a substance of
An Element and a Compound
Compounds
Atoms
Two Elements
- Multiple ChoicePlease save your changes before editing any questions.
What are the three states of matter? (check all)
Solid
Liquid
Metal
Gas
Nonmetals
- Multiple ChoicePlease save your changes before editing any questions.
Earth's atmosphere is primarily composed of which gases?
hydrogen, helium, oxygen, and argon
nitrogen, oxygen, argon, and carbon dioxide
nitrogen, hydrogen, argon, and carbon dioxide
helium, hydrogen, oxygen, and carbon dioxide
- Multiple ChoicePlease save your changes before editing any questions.
Two or more elements chemically combine to form a
mixture
atom
compound
element
- Multiple ChoicePlease save your changes before editing any questions.
Rust is a compound with the formula Fe2O3. Which elements combine to form rust?
iron and water
iron and oxygen
iron and air
iron and acid
- Multiple ChoicePlease save your changes before editing any questions.Which statement best describes an electron?Smaller mass than a proton and a negative chargeSmaller mass than a proton and a positive chargeGreater mass than a proton and a negative chargeGreater mass than a proton and a positive charge
- Multiple ChoicePlease save your changes before editing any questions.
What makes the atoms of two different elements different?
number of electrons
number of protons
number of neutrons
number of ions
- Multiple ChoicePlease save your changes before editing any questions.
O, Na, and S, are examples of
chemical equations
chemical formulas
chemical symbols
subscripts
- Multiple ChoicePlease save your changes before editing any questions.What happens when my glass of water is sitting in the sun and disappears into a gas?evaporationburningmeltingfreezing
- Multiple ChoicePlease save your changes before editing any questions.What is the left part of a chemical equation called?
H2 + O → H2OReactantsProductsYieldsChemical Equation - Multiple ChoicePlease save your changes before editing any questions.
What are the products of the chemical reaction pictured?
CH4 and CO2
CH4 and O2
CO2 and H2O
O2 and H2O
- Multiple ChoicePlease save your changes before editing any questions.At higher temperaturesparticles in an object have less energyparticles in an object move fastera gas contracts
- Multiple ChoicePlease save your changes before editing any questions.A molecule is smaller than an atom.TrueFalse
- Multiple ChoicePlease save your changes before editing any questions.How many Hydrogen (H) atoms are in NH3O53451
- Multiple ChoicePlease save your changes before editing any questions.How many Hydrogen are in 4H2O?6824
- Multiple ChoicePlease save your changes before editing any questions.
Chemical or Physical:
Color, shape, texture, and luster are all examples of _______________ properties of matter.
Chemical
Physical
- Multiple ChoicePlease save your changes before editing any questions.
The ability of matter to change when heated is a _____________.
Chemical
Physical
- Multiple ChoicePlease save your changes before editing any questions.
The Law of Conservation of Mass says that matter can neither be __________ or __________.
created; destroyed
recycled; renewed
subtracted; added
joined; separated
- Multiple ChoicePlease save your changes before editing any questions.How many atoms are there TOTAL in:
H2SO46573 - Multiple ChoicePlease save your changes before editing any questions.2H2 + O2 ----> 2H2O What is the product?------>2H2O2H2+ O2
- Multiple ChoicePlease save your changes before editing any questions.How many O's are in Al₂(SO₄)₃412724
- Multiple ChoicePlease save your changes before editing any questions.
Which contains a solid? (Choose all)
A
B
C
D
- Multiple ChoicePlease save your changes before editing any questions.Can an element be broken down into a simpler substanceyesNo