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Properties of Matter Flashcards | StudBud
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Properties of Matter
Properties of Matter
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chemical and physical properties, atoms, periodic table, and chemical equations
Flashcards
16 cards
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Questions
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Answers
1
Which of the following is NOT a sign of a chemical reaction?
a change in temperature
producing steam
2 liquids becoming a solid
production of a gas
2
Is this chemical equation balanced?
yes
maybe
no
I'm lost on this still
3
What is atomic mass?
The number of neutrons minus protons
The number of protons plus neutrons
The number of neutrons
The number of protons
4
What is the atomic number of Carbon
12
6
18
24
5
How many electrons are present in the model?
17
35
52
18
6
What are positively charged particles?
neutrons
protons
electrons
positrons
7
A 50g banana is left on the table. After 2 weeks its mass 45g. Why has the mass changed?
gas formed as it decayed and left the banana
The banana evaporated
It is in a closed system
8
3CH
4
- How many atoms of hydrogen?
4
7
3
12
9
How many valence electrons does Neon (Ne)
2
18
8
10
10
The simplest substances that cannot be broken down into any other substances are
solutions
compounds
elements
mixtures
11
Which of the following gives the number of energy levels for an element?
atomic mass
group
period
atomic number
12
How many neutrons does Fluorine have?
10
27
19
9
13
Elements in the same column of the periodic table are called
columns
groups
periods
sections
14
Which of the following would be an example of a CHEMICAL change?
A metal car door turning to rust
rain water evaporating
water freezing to ice
steam rising from a pot of boiling water
15
Which of the following statements is true for propane?
It is part of the reactant
There are 8 molecules of propane
It is part of the product
There are 3 molecules of propane
16
What happens to metal reactivity as you move down the periodic table?
stays the same
increases
decreases
