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ch.1 lesson 1

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1.
1 point
changing water into ice is a chemical change.
2.
1 point
melting butter is an example of physical change.
3.
1 point
a ratio tells you the relationship between two or more things.
4.
1 point
air is matter.
5.
1 point
the center of the atom is the nucleus.
6.
1 point
all matter is made up of tiny particles called atoms.
7.
1 point
in a homogenous mixture the substances are so evenly mixed they are DIFFICULT to separate.
8.
1 point
every form of matter has two kinds of properties- physical and:
9.
1 point
which of the following is not an element:
10.
1 point
When a fuel burns, it combines with oxygen in the air and changes into the substances water and:
11.
1 point
the nucleus consists of the electrons and neutrons.
12.
1 point
matter is:
13.
1 point
what is H2O?
14.
1 point
a property is not a characteristic of matter
15.
1 point
the study of matter and how matter changes is:
16.
1 point
what substance forms when you chemically combine 2 hydrogen atoms with 1 oxygen atom?
17.
1 point
in a heterogenous mixture you CAN easily separate all the materials in the mixture.
18.
1 point
hardness, texture, temperature, and color are examples of:
19.
1 point
a good conductor of heat is:
20.
1 point
name the 3 states of matter.
21.
1 point
a substance is a single kind of matter that is not pure.
22.
1 point
there are over 100 elements.
23.
1 point
how many atoms of hydrogen are in the following formula: H2SO4
24.
1 point
a pure material is not mixed with any other material.
25.
1 point
rust is an example of something going through what kind of change?
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