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Biology Chapter 6.1-6.2 Test

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1.
1 point
Solutions _____________ 7 are neutral.
2.
1 point
If a substance releases Hydroxide ions (OH-) when dissolved in water then they are:
3.
1 point
What is composed of tiny particles called atoms?
4.
1 point
Particles found inside the nucleus which contain a positive charge:
5.
1 point
What is dissolved?
6.
1 point
A mixture that can react with acids or bases to keep the pH at a particular level:
7.
1 point
Particles found inside the nucleus which contain no charge.
8.
1 point
What is the most abundant form of carbon?
9.
1 point
Solutions ________________7 are basic.
10.
1 point
A compound in which the atoms are held together by covalent bonds:
11.
1 point
The oxygen in water has a _____________ charge:
12.
1 point
The basic unit of matter:
13.
1 point
If a substance releases Hydrogen ions (H+) when dissolved in water then it is a (an):
14.
1 point
The chemical bond formed when electrons are shared:
15.
1 point
What dissolves a substance?
16.
1 point
A pure substance that is formed when two or more elements combine:
17.
1 point
A combination of two or more substances in which the substances retain its individual characteristics and properties.
18.
1 point
A homogenous mixture or _________________has a uniform composition throughout.
19.
1 point
The type of bond created by an electrical attraction between oppositely charged particles:
20.
1 point
A pure substance that can't be broken down into other substances by chemical or physical means.
21.
1 point
The Table of Common Weights and Measure is the table used to show the collection of information about the elements.
22.
1 point
In an atom, the number of protons equal the number of ____________ to make the atom have an overall charge of 0.
23.
1 point
Solutions __________ 7 are acidic.
24.
1 point
Water is a polar molecule because:
25.
1 point
The properties of water make it well suited to maintain homeostasis in an organism.
26.
1 point
Atoms that contain the same number of neutrons and electrons have an overall charge of zero.
27.
1 point
____________have the same number of protons and electrons, but have a different number of neutrons.
28.
1 point
Caused by the change in the number of neutrons inside the nucleus, which makes the nucleus unstable causing it to break down or decay and give off radiation.
29.
1 point
Scientists use the pH scale to determine how acidic or basic a solution is.
30.
1 point
Atomic Number is equal to the number of ____________and the number of electrons.
31.
1 point
Found outside the nucleus and have a negative charge:
32.
1 point
In a _____________mixture, the components remain distinct. You can tell what they are individually.
33.
1 point
The hydrogen in water has a ______________ charge:
34.
1 point
Protons + Neutrons = ____________________
35.
1 point
An atom that has gained/lost an electron, which gives it a positive or negative charge.
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