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Chemistry Unit 1, 2, & 3 Review Flashcards | StudBud
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Chemistry Unit 1, 2, & 3 Review
Chemistry Unit 1, 2, & 3 Review
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1
An element is a
substance that cannot be broken down
combination of 2 or more substances
group of 2 or more atoms
chemically bonded atom
2
If a substance is pure and can be simplified chemically, it's called a (an)...
homogenous
element
compound
atom
3
Which of the following is an example of a chemical formula?
C + O = Carbon Dioxide
21:11
Carbon Dioxide
CO2
4
When elements chemically combine, they form compounds w/ properties different from the original
true
false
5
Melting and freezing are examples of:
physical properties
molecules
chemical properties
compounds
6
A mixture is
made of substances where atoms have NOT chemically bonded
made of substances where atoms have chemically bonded
the formula for elements in a compound
the smallest, purest substance
7
Gold has a density of 19.3 g/cm
3
. If you find a nugget of gold with a mass of 230.2 grams, what is its volume?
11.927 g
0.0838 cm3
0.0838 g/cm3
11.927 cm3
8
Chemistry is the study of
functions of living things
matter and the changes in matter
the nature and properties of matter and energy
all living things
9
What is the volume of Spongebob (the irregular shaped object)?
2 mL
52 mL
4 mL
50 mL
10
What is the volume of this irregular shaped object?
2.8 mL
0.8 mL
2 mL
5.8 mL
11
A mixture is heterogenous when...
it's difficult to separate
it's evenly mixed, but you can see different parts
it's evenly mixed & you cannot see different parts
it's all the same substance
12
If a mixture is evenly mixed and uniform throughout, it's...
homogenous
heterogenous
13
Mass and weight measure the same thing.
True
False
14
If you have 210 grams of aluminum with a volume of 75 cm
3
, then what is the density?
15,750 g/cm3
2.8 cm3
0.357 g/cm3
2.8 g/cm3
15
When 2 or more elements are chemically bonded in a set ratio, it's called
compound
atom
mixture
element
16
Calculate the density for an object that has a mass of 96 grams and a volume of 24 cm
3
0.25 g
4 g/cm3
0.25 g/cm3
4 g
17
The formula for density is...
D = 9.8 g/m2
D = M x V
D = M/V
D = V/M
18
All of the following are examples of physical properties EXCEPT
melting
ability to rust
hardness
texture
19
All of the following are examples of chemical properties EXCEPT:
ability to react with other substances
ability to burn
boiling point of a substance
ability to rust
20
Our favorite class of all time ever in the world is obviously
Ms. Nolan's Science Class
Science with Ms. Nolan
This class (duh)
Only science class taught by our favorite teacher, Ms. Nolan
21
Characteristics used to describe matter are called:
physical properties
chemical bonds
matter
chemical properties
22
On the moon, I weigh the same as on Earth.
False
True
23
What is the volume of this irregular shape?
16.6 mL
6.3 mL
10.3 mL
20.6 mL
24
Solid, liquid, and gas are the three ________________ of matter.
states
compounds
compositions
chemical properties
25
A force of attraction between two atoms is called:
element
molecules
chemical property
chemical bond
