Integrated Science Midterm Review

Question 1

Knowing the chemical properties of a substance will tell you how the substance

Accepted Answer

reacts with other substances

Question 2

The SI base unit used to measure mass is the

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gram

Question 3

A scientific theory is an explanation that

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has been tested by many observations

Question 4

Oxygen's atomic number is 8. This means that an oxygen atom has

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eight protons

Question 5

The maximum number of electrons in the second orbital of an atom is

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8

Question 6

In the modern periodic table, elements are arranged according to increasing _____.

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atomic number

Question 7

In a covalent bond, electrons are

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shared

Question 8

A material that can be represented by a chemical formula is a/an

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compound

Question 9

What is the neutral particle that is formed when atoms share electrons?

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molecule

Question 10

A lithium iron is much less reactive than a lithium atom because it

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has a full valence level

Question 11

One way to analyze data from a study is to:

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make a graph

Question 12

Which of these atoms has the most mass?

Accepted Answer

uranium

Question 13

A scientific model is a

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representation of a real event or object

Question 14

How does the mass of the products compare to the mass of the reactants?

Accepted Answer

the masses are equal

Question 15

What makes an element distinct (different from other elements)?

Accepted Answer

number of protons

Question 16

You stir 1 gram of salt into 1 liter of water. The result is a

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solution

Question 17

Most of the mass of an atom is found in its

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nucleus

Question 18

When designing an experiment, the first step is to

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recognize a problem

Question 19

Scientists may draw conclusions from the results of

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both experiments and observational studies

Question 20

The variable plotted on the horizontal or x axis is called the

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independent variable

Question 21

When conducting a science experiment, the last step is to ______.

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B. draw conclusions

Question 22

In an ionic bond, electrons are:

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Lost or gained

Question 23

Which particles have the same mass?

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B. proton and neutron

Question 24

A heterogeneous mixture is one that is NOT

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uniform throughout

Question 25

How many electrons are in the valence level of most atoms for them to be chemically stable?

Accepted Answer

8

Question 26

Electron dot diagrams are used to represent

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valence electrons

Question 27

An atom that has gained or lost electrons is called a/an

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ion

Question 28

The most appropriate SI unit for measuring the length of an automobile is the

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meter

Question 29

Matter with no definite volume and no definite shape is a

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gas

Question 30

What makes an atom an isotope?

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having a different number of neutrons

Question 31

Digesting food is an example of

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chemical change

Question 32

A chemical symbol represents the _______ of an element.

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name

Question 33

What does it mean to say that "no experiment is a failure"?

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all experiments are observations of real events

Question 34

Which of the following requires the input of thermal energy (heat)?

Accepted Answer

evaporation

Question 35

According to Bohr's model of the atom, electrons behave like

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planets orbiting the sun

Question 36

Maria is 123 cm tall. Her height in meters is

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1.23m

Question 37

A certain atom has 26 protons, 26 electrons and 30 neutrons. Its mass number is:

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56

Question 38

The force with which gravity pulls on a quantity of matter is referred to as

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weight

Question 39

Which state of matter is most common in the universe?

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plasma

Question 40

Matter is defined as anything that

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has mass and takes up space

Question 41

What is the group number for elements that have a stable number of valence electrons?

Accepted Answer

18

Question 42

Which of the following is an example of physical change?

Accepted Answer

cooking an egg

Question 43

Often atoms will join so that each atom will have

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an outermost energy level that is full of electrons

Question 44

Valence electrons determine an atom's

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chemical properties

Question 45

A liquid changes rapidly into a gas at the liquid's

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boiling point

Integrated Science Midterm Review

Questions 45

Integrated Science Midterm Review

Questions 45