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Knihovna

Q1_Makeup Work/Extra Credit_PS

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Poslední aktualizace 2 months ago
22 Dotazy

Assignment 1

Assignment 2

Assignment 3

1
Otázka 1
1.

What element has the atomic number 6?

1
1
Otázka 3
3.

What do all elements found on the periodic table have?

1
Otázka 4
4.

What is a physical property of gold?

1
1
1
Otázka 7
7.

What is true about the new substance that is formed when the atoms of a specific substance are regrouped?

1
Otázka 8
8.

How are the properties of sodium chloride different from the properties of sodium and chlorine?

1
Otázka 9
9.

What do you see in the picture?

1
Otázka 10
10.

What is matter made of?

1
Otázka 11
11.

What do the numbers of the new elements tell scientists?

1
Otázka 12
12.

What is NOT a way that elements are named?

1
Otázka 13
13.

Which element's name do you like the best? Why?

1
Otázka 14
14.

Why are the people of Japan happy about the name Nihonium?

1
Otázka 15
15.

What is one property of Nihonium?

1
Otázka 16
16.

What is one property of the substance in the picture?

1
Otázka 17
17.

What is matter?

1
Otázka 18
18.

Why are physical and chemical changes different?

1
Otázka 19
19.

Why is changing the texture of wood an example of a physical change?

1
Otázka 20
20.

What happens to the molecules of water in a change of phase?

1
Otázka 21
21.

What happens during a chemical change?

1
Otázka 22
22.

Which is NOT a sign of a chemical change?

Otázka 2
2.

What is the atomic number of aluminum (Al)?

Otázka 5
5.

What is a physical property of oxygen?

Otázka 6
6.

What do elements create when they are combined in varying ways?