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Chemistry

Maria Bolanos

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Across
1.v1/t1=v2/t2
3.positively charged part in the atom
8.diagram to show how many valence electrons there are
9.no charge in atom
13.a carbon based compound reacts with oxygen to form carbon dioxide,co2,and water
14.p1x v1=p2xv2
15.single element replaces another element in a compound
17.substance are made of one kind of atom
19.electrons in the outer shell
21.p1/t1=p2/t2
22.p1x v1/t1=p2xv2/t2
23.2 or more substances combine to form a single substance
24.negatively charged ions
Down
2.number of protons in an atom
4.positively charged ions
5.he drew the first periodic table
6.rv=rnt
7.a single compound breaks down in 2 or more simpler substances
10.high melting point
11.the cations and anions of 3 different compounds switch places
12.low melting point
16.tiny structures that make up all matter
18.elements that have characteristics of both metals and non metals
20.negatively charged part in the atom

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