Science final1
What is the density of a sample if liquid the has a volume of 125 mL and mass of 200g
1.6g/mL
The chemical formula for table sugar is C 12 H 20 o 11 how many oxygen atoms are in each sugar molecule?
11
How many atoms are in a single molecule of Fe2O3?
5
Which of the following causes a chemical change Moving Shattering Burning Melting
Burning
Which of the following causes a chemical change moving shattering burning melting
Burning
How can a chemical change be reversed
By chemical changes
Which of the following results in a mixture baking a cake burn in the log dissolving salt digesting food
Dissolving salt
A chemical property of copper is its?
Reactivity
Which of the following is not an example of a physical property Freezing point Reactivity Boiling point Density
Reactivity
Which property of a substance is not affected by physical changes?
Reactivity
Which tool is best for separating a mixture of sand and water tweezers magnet centrifuge filter
Filter
The diamond is known for its?
Hardness
Matter is defined as anything that?
Has mass and takes up space
Which of the following is not a potential sign of chemical change change an oder change in color 15 point Lane
...
The mass of 20 l sample of gas with a density of 0.04 mg/l is
0.8 mg
Unlike a mixture a pure substance has?
A fixed composition
A material that can be represented by chemical formula is?
A pure substance
Which of the following is not a physical property of iron Melting point Ability to rust Color Conductivity
Ability to rust
Which of the following is not a physical property of iron melting point ability to rust color conductivity
Ability to rust
Which of the following is a physical change dissolving evaporating bending or all of the above
All of the above
Which of the following is a physical change dissolving evaporating bending or all the above
All of the above
The smallest unit of an element that maintains the properties of an element is an?
Atom
Which of the following is not a potential sign of chemical change?
Boiling
Digesting food is an example of?
Chemical change
Which of the following is made from at least two different types of Adams and element a molecule compound matter
Compound
A physical property of gold is it's?
Density
A physical property of gold is it?
Density
An objects volume can be found by dividing its mass by it's?
Density
And objects volume can be found by dividing that's mass by its
Density
You put a spoonful of salt and a 1 L of water and start the resulting liquid is an example of a
Homogeneous mixture
Which of the following is an element? Salt Iron Nylon Sand
Iron
The different substances in a mixture
Keep their properties
The different substances in a mixture?
Keep their properties
Helium is used in balloons because it is?
Lighter than air
Which of the following is not a pure substance Element Molecule Compound Mixture
Mixture
Which of the following is not a pure substance? Element Molecule Compound Mixture
Mixture
A group of atoms that acts as a unit is called?
Molecule
A chemical change occurs whenever
New substances form
Chemical changes can affect physical and chemical properties where as physical changes can affect
Physical properties
Solids, liquids and gases are three forms of matter that?
Take up space , have mass, are made of atoms
