5. Which prefix stands for a greater value? a) deca- or kilo-? d) hecto- or kilo-? b) kilo- or milli-? e) centi- or deci-? c) centi- or milli-? f) deca- or deci-?
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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5. Which prefix stands for a greater value?
a) deca- or kilo-?
d) hecto- or kilo-?
b) kilo- or milli-?
e) centi- or deci-?
c) centi- or milli-?
f) deca- or deci-?
MEASURING MASS
1. In the metric system, the unit of mass is the
meter, kilogram, pound
2. Mass and weight
the
Are, are not
same.
3.
is a measure of the amount of matter in an object.
mass, weight
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Figure A
4. What instrument is used to measure mass?
5. What is the mass of the object shown?
TRUE OR FALSE
In the space provided, write "true" if the sentence is true. Write "false" if the sentence is false.
1. Weight is a measure of the pull of gravity on an object.
2. Scientists use English units of measurement.
3. The prefix centi- stands for one hundredth (1/100).
4.
A graduate is used to measure mass.
5.
The basic unit of length in the metric system is the meter.
6.
Volume is a measure of the amount of matter in an object.
7. One kilogram is less than one gram.
8. A measurement has two parts.
9.
A unit is an amount used to measure something.
10. Most countries use the metric system."
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