Extensive properties are

dependent on the amount of matter present

Chemistry is the study of

composition & properties of matter.

Scientist that works on a product that uses carbon fibers

both applied research and technological development

2 or more elements sharing electrons

what is the difference between chemical and physical changes?

chem. changes create new substances physical ones do not

What are the 6 branches of chemistry?

organic, physical, theoretical, analytical, biochemistry, inorganic

definite volume but not definite shape

Where are most metals located on the periodic table?

On the left side and in the middle

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chemistry atoms, matter, mixtures, changes, properties and branches of chemistry

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Chapter 1 of Modern Chemistry

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Questions 32

Answers

1
A homogeneous mixture is one that
cannot change state easily.
has separate layers
is uniform in composition
contains only one element.
2
Extensive properties are
not dependent on the amount of matter present
also physical properties
dependent on the amount of matter present
given to tell chemical reactivity
3
Chex-Mix is a/an____?
a heterogeneous mixture
element
homogeneous mixture
pure substance
4
Chemistry is the study of
the origin & history of the Earth.
composition & properties of matter.
living things.
the universe beyond Earth.
5
Which is a physical change?
boiling an egg
molding play dough
burning paper
baking cookies
6
Scientist that works on a product that uses carbon fibers
both applied research and technological development
technological devlopment
applied research
basic research
7
Molecules are
ductile and malleable
any substance having mass and volume
simplest unit of matter
2 or more elements sharing electrons
8
Which of these are the Diatomic atoms?
Cl2, O2, Pu2, I2, Mn2, H2, Ca2
K2, Au2, H2, Mg2, O2, Xe2, Br2
O2 ,F2, H2, Cl2, Br2, I2, N2
Se2, Rb2, Cu2, H2, P2, As2, O2
9
what is the difference between chemical and physical changes?
physical changes create new substances and chemical ones do not
its harder to make a physical change rather than a chem. one
chem. changes create new substances physical ones do not
chemical experiments take longer than physical based ones
10
A physical change, changes an object's......
Chemical properties
physical properties
Atomic Mass
Size or melting point
11
Temperature, boiling point and color are ____ properties.
extensive
chemical
changing
intensive
12
What are the 6 branches of chemistry?
oragnic, physical, chemcial, proton, ion, biochemistry
inorganic, physical, analytical, biochemistry, advanced, theoretical
technical, biochemistry, analytical, organic, theoretical, physical
organic, physical, theoretical, analytical, biochemistry, inorganic
13
Metalloids are ____ at room temperature
gases
plasmas
liquids
solids
14
Liquids have
definite volume but not definite shape
definite shape but not volume
no definite shape and volume
definite shape and volume
15
atoms are the basic unit of?
matter
electrons
energy
protons
16
On the periodic table, groups or families are arranged by...
Columns
Decreasing mass
atomic number
Rows
17
Metals are good conductors of thermal energy and electricity.
False
True
18
Which action is a chemical change?
crushing metal
lighting a candle
melting crayons
biting chocolate
19
Salt water is an example of ____.
pure substance
homogeneous mixture
compound
heterogeneous mixture
20
What is an example of homogeneous mixtures?
vegetable soup
pecan ice cream
salad
powdered drink mix
21
_______ is/are composed of ionized atoms
Solids...
Liquids...
Gas...
Plasma...
22
Where are most metals located on the periodic table?
On the left side only
On the left side and in the middle
In the middle only
On the right side only
23
Physical changes
give off or take up energy
give off a gas
tell how a chemical will react
do not create a new substance
24
Scientific research performed to increase knowledge is
applied research
basic research
organic chemistry
technological development
25
Sugar is a(n)
element
pures substance
homogeneous mixture
heterogeneous mixture
26
Which is not a property of metals?
tensile strength
Ductility
poor conductor of heat
Conductivity
27
_____ has the lowest kinetic energy.
solid
gas
liquid
plasma
28
All are physical changes except...
Eggs cooking
Melting ice
Shredding paper
Dicing Potatoes
29
_______ has the highest intermolecular forces.
plasma
gas
liquids
Solids
30
This represents a ____.
mixture of elements and a gas
pure stubstance and a solid
chemical compounds and a solid
mixture and a pure substance
31
Horizontal rows on the periodic table
Classes
Groups
Families
Periods
32
Chemical changes
tell how a chemical will react
invovles a change in state
create a new substance
give the visible characteristics of a substance

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