Mixtures are easy to identify because...

the ingredients keep their properties

We can prove something has MASS by....

putting it on an electronic balance

Compounds are different from elements and mixtures because...

the properties of ingredients change

is made of a combination of two or more elements

Elements can be broken down smaller by:

special (very complex) lab equipment only

Which is INCORRECT technique when finding volume of a liquid?

hold it in your hand to get a better view

Solubility is a physical property that describes....

how well something dissolves in water

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Unit 4 Test Review (ECM, Phys/Chem, Measurement)

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A 30 question review on our studies of Elements, Compounds and Mixtures; Physical and Chemical Properties & Changes; and Measurement. #science #chemistry

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Questions 30

Answers

1
In any chemical reaction, matter cannot be ________________ or _____________________.
created, destroyed
reformed, eliminated
renewed, altered
changed, altered
2
Which is NOT an example of a compound?
sodium bicarbonate
water
apple juice
silicon dioxide
3
Mixtures are easy to identify because...
the ingredients keep their properties
they are made of only one type of atom
the are on the periodic table
they change significantly when forming
4
Elements are unique because they are made of:
a single type of atom
not made of atoms
2 types of atoms
3+ types of atoms
5
The smallest piece of an element that is still an element is called....
a molecule
an atom
a proton
a sample
6
We can prove something has MASS by....
seeing if it floats
measuring length x width x height
putting it in a graduated cylinder
putting it on an electronic balance
7
Evidence that a physical change has occurred might be...
a dramatic color change
new molecules are formed
it gets colder
a change of phase
8
Which of the following is NOT a chemical property of matter?
density
ability to rust
corrosiveness
flammability
9
What is it?
Compound
Element
Mixture
10
What is it?
mixture
compound
element
11
Compounds are different from elements and mixtures because...
the properties of ingredients change
the properties of ingredients stay the same
they are made of only one type of atom
they can be separated much more easily
12
Which is NOT an example of an element?
potassium
carbon
dihydrogen monoxide
silicon
13
A compound.....
is a mixture
is made of a combination of two or more elements
can be separated by physical means
does not have a fixed composition
14
Elements can be broken down smaller by:
boiling
special (very complex) lab equipment only
straining
chemical reactions
15
Select the appropriate tool to find MASS.
ruler
graduated cylinder
flask
electronic scale
16
Compounds can be separated by.....
chemical reactions
they cannot be separated
evaporation
sorting by hand
17
Elements, Compounds and Mixtures are all made of:
solutions
protons
earth
atoms
18
Which change is a PHYSICAL change?
burning paper
cooking eggs
exploding fireworks
boiling water
19
Which part of this equation is the PRODUCT?
Hydrogen and Oxygen
The arrow
Water
Hydrogen
20
Does this equation obey the Law of Conservation of Mass?
No
Yes
21
Which item would NOT help to find the VOLUME of this object?
electronic scale
water
graduated cylinder
calculator
22
Don't be fooled! This evidence could mean a PHYSICAL or CHEMICAL change.
bubbles
new molecules
precipitate forms
heat is released
23
What is it?
element
compound
mixture
24
Which is INCORRECT technique when finding volume of a liquid?
place cylinder on a level surface
read the bottom of the meniscus (curve)
view at eye level
hold it in your hand to get a better view
25
Which change is a CHEMICAL change?
spreading butter on hot toast
cutting your hair
blowing bubbles
digesting breakfast
26
Evidence that a physical change has occurred might be...
a dramatic color change
heat is released
the shape changes
a popping sound
27
The smallest piece of compound that maintains all its properties is called....
a substance
an atom
a proton
a molecule
28
Which one is NOT a physical property?
shape
solubility
color
reactivity
29
All matter...
is made of earth, wind, fire or water elements
can be destroyed
can be created
has mass and volume
30
Solubility is a physical property that describes....
whether an item will rust
how well something dissolves in water
what temperature something will melt
if something will sink or float

Unit 4 Test Review (ECM, Phys/Chem, Measurement) Flashcards | StudBud