a substance made of atoms of two or more different elements

What are examples of GAS?

carbon dioxide, water vapor, oxygen

What is the main difference between physical and chemical change?

Chemical changes its identity, physical does not.

Can mixtures be physically separated? How?

yes by physically separating or by heating

anything that has mass and takes up space

Chemical change occurs when...

a substance changes composition by forming new substances

What are examples of pure substances?

elements and compounds and water

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Review for IPS Chapter 2

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Chapter 2 review for test

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Questions 20

Answers

1
What are examples of SOLID?
sand, pencil cookie
helium, gasoline, salt
ice cube, sand, shampoo
maple syrup, salt, fish
2
What are the 3 states of matter?
volume, mass, shape
trees, lakes, buildings
solid,liquid and gas
nina, pinta, santa maria
3
Examples of homogeneous mixtures are...
honey and milk
rocks and pebbles
sugar/water
salt and peper
4
What is a compound?
anything that has mass
a substance made of atoms of two or more different elements
a substance that cannot be separated
a combination of chemical symbols and numbers
5
Which are examples of physical properties?
odor
all of the above
shape
color
6
What are examples of GAS?
milk, paint, sand
sand, helium, shampoo
carbon dioxide, water vapor, oxygen
helium fish ice cube
7
What are examples of liquid?
fish, oxygen, oil
shoe, milk, helium
milk,shampoo, paint
sand, rice, water vapor
8
What do chemical properties describe?
how physical properties work
how science is different from chemistry
how a golf ball is denser than a ping pong ball
how a substance reacts
9
What is the main difference between physical and chemical change?
Chemical changes its identity, physical does not.
There is no difference
chemical stays the same, physical changes
physical and chemical are the same
10
What is the formula for density?
d=m x v
D=m/V
D=v/m
d= v + m
11
What is density?
Density determines whether an object will float or sink
Density is a physical property
the ratio of the mass of a substance to the volume of it.
All of the above
12
Examples of heterogeneous mixtures are...
flour/water
butter and bread
sand and mud
soap and water
13
Can mixtures be physically separated? How?
yes by physically separating or by heating
sometimes if you are lucky
yes by breaking it in two
no can't be done
14
In a LIQUID stage of matter, atoms are...
spread out a lot
packed together
invisible
spread out a little
15
Examples of immiscible mixtures are...
rice and beans
oil/water
sugar and spice
sugar/water
16
Matter is...
anything that has mass and takes up space
a substance that cannot be separated
a scientific study of composition
the smallest unit of an element
17
Chemical change occurs when...
elements combine chemically to form a compound
gases mix with liquid
substances conduct heat
a substance changes composition by forming new substances
18
What are examples of pure substances?
oil and vinegar
fanta and coke
elements and compounds and water
tomatoes
19
In a GAS stage of matter, atoms are...
packed tight
spread out a lot
spread out a little
invisible
20
In a SOLID stage of matter, atoms are...
spread apart a lot
packed tightly together
spread apart
invisible

Review for IPS Chapter 2 Flashcards | StudBud