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Introduction to Chemistry Flashcards | StudBud

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Introduction to Chemistry

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This introduction to chemistry quiz is based on material found at http://www.howaboutscience.com/#!intro-to-chemistry/cu6v1

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Questions 13

Answers

1
Where do we find protons and electrons?
orbiting around the nucleus
in the nucleus
in a cell
in a molecule
2
Which of these is a chemical change?
producing acetylene gas from calcium carbide
lighting the gas on fire
lighting a lighter
all of these
3
Why do atoms bond together?
to keep the atoms charge at 0
to fill their outer shells with electrons
they get lonely
to fill their nucleus
4
What has mass and occupies space?
matter
chemicals
light
energy
5
What are molecules and compounds made of?
elements
energy
cells
electrons
6
What happens when there is a chemical change?
a color change
all of these is true
a gain or loss of energy
a new substance is formed
7
What do we get when two or more elements combine?
atom
compound
molecule
mixture
8
Which of these is not an example of a chemical change?
adding corn starch to water
burning a piece of paper
an exploding firecracker
adding alka seltzer to water
9
What is the smallest unit of matter?
protons
compounds
atoms
molecules
10
What do we call a substance made of more than one atom?
a compound
a molecule
a chemical
a mixture
11
What is chemistry the study of?
mass
matter
life
space
12
Which is not true of electrons?
they are found in the atom's nucleus
they have a negative charge
they orbit the nucleus
there are the same number of protons as electrons
13
Which is not true about carbon dioxide?
it is made of one element
it is made of three atoms
it is made of carbon and oxygen
it is a compound