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- Multiple ChoicePlease save your changes before editing any questions.What two types of atoms make a covalent bond?2 Nonmetals1 Nonmetal and 1 Metal2 Metals2 Noble Gases
- Multiple ChoicePlease save your changes before editing any questions.Ionic bonds are between...Metal and Non-metalNon-metal and Non-metalMetal and Metal
- Multiple ChoicePlease save your changes before editing any questions.Which of the following is NOT an ionic compound:CaONaOHBaCl2Br2
- Multiple ChoicePlease save your changes before editing any questions.
Al2O3
ionic
covalent
- Multiple ChoicePlease save your changes before editing any questions.
A ______________ mixture is one that does not have a uniform composition.
heterogeneous
homogenous
pure substance
- Multiple ChoicePlease save your changes before editing any questions.
Dry ice is solid carbon dioxide, or CO2. Dry ice may be used as a cooling agent and contains two oxygen atoms bonded to a carbon atom. Dry ice is a ___________________ .
pure substance
mixture
- Multiple ChoicePlease save your changes before editing any questions.
Instant coffee is made by dissolving a powder in hot water. Instant coffee is a ___________________ .
pure substance
mixture
- Multiple ChoicePlease save your changes before editing any questions.
Blood is a fluid found in the bodies of humans and other animals. It can be physically separated into plasma, red blood cells and white blood cells. Blood is a ___________________
pure substance
mixture
- Multiple ChoicePlease save your changes before editing any questions.Is burning wood a chemical or physical change?chemicalphysical
- Multiple ChoicePlease save your changes before editing any questions.Which is a physical change?burning matchvinegar in baking sodamelting buttercooking an egg
- Multiple ChoicePlease save your changes before editing any questions.Is milk going sour a physical or chemical change?PhysicalChemical
- Multiple ChoicePlease save your changes before editing any questions.Water freezingChemical ChangePhysical Change
- Multiple ChoicePlease save your changes before editing any questions.
Put the liquids in order from most dense to least dense?
4,3,2,1
1,2,3,4
3,4,2,1
4,3,1,2
- Multiple ChoicePlease save your changes before editing any questions.
What causes an object to sink in a water?
if the object's density is less than the water's density.
if the object's density is the same as water's density.
if the object's density is greater than water's density.
if the object's density is zero
- Multiple ChoicePlease save your changes before editing any questions.
Calculate the density of the cube.
2 g/cm3
4 g/cm3
6 g/cm3
8 g/cm3
- Multiple ChoicePlease save your changes before editing any questions.What is the density of a liquid that has a mass of 27g and a volume of 30ml?0.9 g/ml3 g/ml57 g/ml810 g/ml
- Multiple ChoicePlease save your changes before editing any questions.
What is the mass of a piece of stainless steal with a density 3.0g/cm3 and a volume of 83.3 cm3
250 g
175 g
301 cm3
- Multiple ChoicePlease save your changes before editing any questions.An oreo cookie weighs 20 grams. It gets crushed into crumbs for a recipe. How much do its crumbs weigh?15 grams25 grams20 grams
- Multiple ChoicePlease save your changes before editing any questions.
Why are unbalanced chemical equations wrong?
Because they make compounds.
Because they don't have reactants and products.
Because they have the same number of atoms on both sides of the equation.
Because they violate the law of conservation of mass.
- Multiple ChoicePlease save your changes before editing any questions.The coefficient in 3H2O is6235
- Multiple ChoicePlease save your changes before editing any questions.How many nitrogen atoms does NH3 have?1234
- Multiple ChoicePlease save your changes before editing any questions.
Which Chemical Equation is Balanced?
Fe4+O2------4FeO2+O2
2H2+O2-----2H2O
3Cr+4O₂-----2Cr₂O₃
- Multiple ChoicePlease save your changes before editing any questions.
Which Chemical Equation is Balanced?
4O2 + 2H2 + S2------ 2H2SO4
4H2+O2-----2H2O2
3Cr+4O₂-----2Cr₂O₃
- Multiple ChoicePlease save your changes before editing any questions.6 CO2 + 6 H2O → C6H12O6 + 6 O2BalancedNot Balanced
- Multiple ChoicePlease save your changes before editing any questions.2 AgI + Na2S → Ag2S + 2 NaIBalancedNot Balanced
- Multiple ChoicePlease save your changes before editing any questions.
PCl5 + 2H2O → H3PO4 + HCl
Balanced
Not Balanced
- Multiple ChoicePlease save your changes before editing any questions.This diagram represents a _____.pure substance that is a compoundmixture of elementspure substance that is an elementmixture of compounds
- Multiple ChoicePlease save your changes before editing any questions.This picture represents which of the following?ElementCompoundMixture
- Multiple ChoicePlease save your changes before editing any questions.
What type of bonding does this picture show?
Ionic
Covalent
- Multiple ChoicePlease save your changes before editing any questions.
What type of bonding does this picture show?
Ionic
Covalent