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Introduction to Chemistry (Chapters 1&3) Flashcards | StudBud

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Introduction to Chemistry (Chapters 1&3)

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

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Questions 13

Answers

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