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102e.6-102e.7 Test Study Guide Flashcards | StudBud
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102e.6-102e.7 Test Study Guide
102e.6-102e.7 Test Study Guide
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1
What is chemistry the study of?
Matter & the physical and chemical changes of matter
Change in physical characteristics of a substance
2
What happens when alkali is placed in water?
It increases the concentration of hydrogen ions
It decreases the concentration of hydrogen ions
3
What is an anion?
A positively charged ion
A negatively charged ion
4
What kind of substance does PH indicate the acidity or alkalinity of?
Oil-based substance
Water-based substance
5
What are elements?
Basic, pure substances that can’t be broken down w/ simpler substances
Matter with definite weight but indefinite volume & shape
6
What is the PH of distilled water?
4.5
6
5
7
7
PH is a numerical measurement that indicates the acidity or alkalinity of water-based substances
True
False
8
PH stands for “Potential Hydrogen”
False
True
9
What is a saccharide?
A simple unit of a carbohydrate
A bond uniting two amino acid groups
Component that fills the intercellular spaces in the skin
10
The scientific study of matter and the physical and chemical changes of matter is known as chemistry
False
True
11
Water molecules have two hydrogen atoms and one _____
Oxygen
Liquid
Solid
Gas
12
Alkaline Solution:
Has more negative hydroxide ions
Loses an electron & oxygen is acquired
Has more positive hydroxide irons
13
Some examples of physical change include melting ice, shredding paper, and mixing sand with water
True
False
14
Lipids:
Store energy & play key role in metabolism
Help body construct and renew itself
Fill the intercellular spaces in the skin
15
Physical change is a change in the physical characteristics of a substance without creating a new one
True
False
16
What are the three parts of an atom?
Solid, gas, or liquid
Protons, neutrons, electrons
17
What definition explains gas matter?
Definite weight, volume, and shape
Definite weight but indefinite volume & shape
Definite weight and volume but no definite shape
18
Amino Acids:
Simple unit of a carbohydrate
Has more negative hydroxide ions
Compounds that join in chains to form proteins
19
What is inorganic chemistry?
Matter that is now living/was alive, has carbon present
Matter that is not alive/never been. Does not contain carbon
20
What definition describes solid matter?
Has definite weight, volume, and shape
Definite weight but indefinite volume and shape
Definite weight and volume but no definite shape
