2nd midterm review

2nd midterm review

10th Grade

15 Qs

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2nd midterm review

2nd midterm review

Assessment

Quiz

Chemistry

10th Grade

Practice Problem

Medium

Created by

Thu Nguyễn

Used 4+ times

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Some students are asked to describe differences between gases and liquids. Three of their suggestions are:

(1) gas molecules are further apart;

(2) gas molecules are smaller;

(3) liquid molecules vibrate around fixed positions. Which suggestion(s) is/are correct?

1 only
2 only
3 only
1 and 3 only

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

When steam at 100 oC condenses to water at 25 oC, what happens to the water molecules?

They move faster and closer together.
They move faster and further apart.
They move slower and closer together.
They move slower and further apart.

3.

FILL IN THE BLANK QUESTION

1 min • 1 pt

How many electrons are shared between the atoms in a molecule of carbon dioxide?

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which gas diffuses slowest?

ethane

carbon dioxide
hydrogen
argon

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

X and Y are isotopes of the same element, so the chemical properties of A and Y are similar.

True
FALSE

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which statement describes the attractive forces between covalent molecules?

A. They are strong covalent bonds which hold molecules together.
B. They are strong ionic bonds which hold molecules together.
C. They are weak forces formed between covalently-bonded molecules.
D. They are weak forces which hold ions together in a lattice.

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Why is copper malleable?

A. Its ions are attracted to the ‘sea of electrons’.
B. Its ions are tightly packed together.
C. Its ions repel each other.
D. Its layers of ions can slide over each other.

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